Search a number
-
+
120210210101 = 168237145587
BaseRepresentation
bin110111111110100010…
…1100011110100110101
3102111021122201101112202
41233331011203310311
53432142303210401
6131120201554245
711453630632562
oct1577505436465
9374248641482
10120210210101
1146a87591083
121b36a1a5985
13b449907a47
145b65225869
1531d867a06b
hex1bfd163d35

120210210101 has 4 divisors (see below), whose sum is σ = 120217372512. Its totient is φ = 120203047692.

The previous prime is 120210210047. The next prime is 120210210139. The reversal of 120210210101 is 101012012021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101012012021 = 132917600031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120210210101 is a prime.

It is a super-2 number, since 2×1202102101012 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120210210181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3555971 + ... + 3589616.

It is an arithmetic number, because the mean of its divisors is an integer number (30054343128).

Almost surely, 2120210210101 is an apocalyptic number.

It is an amenable number.

120210210101 is a deficient number, since it is larger than the sum of its proper divisors (7162411).

120210210101 is an equidigital number, since it uses as much as digits as its factorization.

120210210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7162410.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 120210210101 its reverse (101012012021), we get a palindrome (221222222122).

The spelling of 120210210101 in words is "one hundred twenty billion, two hundred ten million, two hundred ten thousand, one hundred one".

Divisors: 1 16823 7145587 120210210101