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22010212201 = 118718542723
BaseRepresentation
bin10100011111111010…
…010010111101101001
32002210221002121222111
4110133322102331221
5330034103242301
614040015122321
71406301500605
oct243772227551
962727077874
1022010212201
11937521121a
1243232133a1
1320c9cb9303
1410cb27c505
1588c499551
hex51fe92f69

22010212201 has 4 divisors (see below), whose sum is σ = 22028756112. Its totient is φ = 21991668292.

The previous prime is 22010212151. The next prime is 22010212229. The reversal of 22010212201 is 10221201022.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 22010212201 - 211 = 22010210153 is a prime.

It is a super-2 number, since 2×220102122012 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22010212241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9270175 + ... + 9272548.

It is an arithmetic number, because the mean of its divisors is an integer number (5507189028).

Almost surely, 222010212201 is an apocalyptic number.

It is an amenable number.

22010212201 is a deficient number, since it is larger than the sum of its proper divisors (18543911).

22010212201 is a wasteful number, since it uses less digits than its factorization.

22010212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18543910.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22010212201 its reverse (10221201022), we get a palindrome (32231413223).

The spelling of 22010212201 in words is "twenty-two billion, ten million, two hundred twelve thousand, two hundred one".

Divisors: 1 1187 18542723 22010212201