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1022231011 = 6991146221
BaseRepresentation
bin111100111011100…
…000000111100011
32122020111201022211
4330323200013203
54043142343021
6245233542551
734221551224
oct7473400743
92566451284
101022231011
1148502831a
12246414a57
13133a21c29
1499a9724b
155eb233e1
hex3cee01e3

1022231011 has 4 divisors (see below), whose sum is σ = 1022384224. Its totient is φ = 1022077800.

The previous prime is 1022231009. The next prime is 1022231033. The reversal of 1022231011 is 1101322201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1101322201 = 7157331743.

It is a cyclic number.

It is not a de Polignac number, because 1022231011 - 21 = 1022231009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022230982 and 1022231000.

It is not an unprimeable number, because it can be changed into a prime (1022231611) 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, 66120 + ... + 80101.

It is an arithmetic number, because the mean of its divisors is an integer number (255596056).

Almost surely, 21022231011 is an apocalyptic number.

1022231011 is a deficient number, since it is larger than the sum of its proper divisors (153213).

1022231011 is an equidigital number, since it uses as much as digits as its factorization.

1022231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153212.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1022231011 is about 31972.3475991364. The cubic root of 1022231011 is about 1007.3560922227.

Adding to 1022231011 its reverse (1101322201), we get a palindrome (2123553212).

The spelling of 1022231011 in words is "one billion, twenty-two million, two hundred thirty-one thousand, eleven".

Divisors: 1 6991 146221 1022231011