23021312100 has 36 divisors (see below), whose sum is σ = 66608330544. Its totient is φ = 6139016480.

The previous prime is 23021312033. The next prime is 23021312123. The reversal of 23021312100 is 121312032.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 23021312100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38368554 + ... + 38369153.

It is an arithmetic number, because the mean of its divisors is an integer number (1850231404).

Almost surely, 2^23021312100 is an apocalyptic number.

23021312100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23021312100 is an abundant number, since it is smaller than the sum of its proper divisors (43587018444).

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

23021312100 is a wasteful number, since it uses less digits than its factorization.

23021312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76737724 (or 76737717 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 23021312100 its reverse (121312032), we get a palindrome (23142624132).

The spelling of 23021312100 in words is "twenty-three billion, twenty-one million, three hundred twelve thousand, one hundred".