23021321121320 has 32 divisors (see below), whose sum is σ = 51798282320520. Its totient is φ = 9208473373440.

The previous prime is 23021321121319. The next prime is 23021321121361. The reversal of 23021321121320 is 2312112312032.

It can be written as a sum of positive squares in 4 ways, for example, as 22450785627076 + 570535494244 = 4738226^2 + 755338^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5415854 + ... + 8681826.

Almost surely, 2^{23021321121320} is an apocalyptic number.

23021321121320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23021321121320 is an abundant number, since it is smaller than the sum of its proper divisors (28776961199200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23021321121320 is a wasteful number, since it uses less digits than its factorization.

23021321121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442205 (or 3442201 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 23021321121320 its reverse (2312112312032), we get a palindrome (25333433433352).

The spelling of 23021321121320 in words is "twenty-three trillion, twenty-one billion, three hundred twenty-one million, one hundred twenty-one thousand, three hundred twenty".