23021222013 has 12 divisors (see below), whose sum is σ = 33256460380. Its totient is φ = 15345827136.

The previous prime is 23021222009. The next prime is 23021222023. The reversal of 23021222013 is 31022212032.

23021222013 is a `hidden beast` number, since 230 + 212 + 220 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20521422009 + 2499800004 = 143253^2 + 49998^2 .

It is not a de Polignac number, because 23021222013 - 2² = 23021222009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021222023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46528 + ... + 219561.

Almost surely, 2^23021222013 is an apocalyptic number.

It is an amenable number.

23021222013 is a deficient number, since it is larger than the sum of its proper divisors (10235238367).

23021222013 is a wasteful number, since it uses less digits than its factorization.

23021222013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275708 (or 275705 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23021222013 its reverse (31022212032), we get a palindrome (54043434045).

The spelling of 23021222013 in words is "twenty-three billion, twenty-one million, two hundred twenty-two thousand, thirteen".