23231223000021 has 16 divisors (see below), whose sum is σ = 32801360054400. Its totient is φ = 14574525047808.

The previous prime is 23231222999993. The next prime is 23231223000023. The reversal of 23231223000021 is 12000032213232.

It is a happy number.

It is not a de Polignac number, because 23231223000021 - 2²⁹ = 23230686129109 is a prime.

It is a super-2 number, since 2×23231223000021² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231223000023) 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 15 ways as a sum of consecutive naturals, for example, 29745076 + ... + 30516093.

It is an arithmetic number, because the mean of its divisors is an integer number (2050085003400).

Almost surely, 2^{23231223000021} is an apocalyptic number.

It is an amenable number.

23231223000021 is a deficient number, since it is larger than the sum of its proper divisors (9570137054379).

23231223000021 is a wasteful number, since it uses less digits than its factorization.

23231223000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60268748.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23231223000021 its reverse (12000032213232), we get a palindrome (35231255213253).

The spelling of 23231223000021 in words is "twenty-three trillion, two hundred thirty-one billion, two hundred twenty-three million, twenty-one", and thus it is an aban number.