23012021100 has 72 divisors (see below), whose sum is σ = 70498019088. Its totient is φ = 5775564800.

The previous prime is 23012021069. The next prime is 23012021177. The reversal of 23012021100 is 112021032.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2250981 + ... + 2261180.

It is an arithmetic number, because the mean of its divisors is an integer number (979139154).

Almost surely, 2^23012021100 is an apocalyptic number.

23012021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23012021100 is an abundant number, since it is smaller than the sum of its proper divisors (47485997988).

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

23012021100 is a wasteful number, since it uses less digits than its factorization.

23012021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512195 (or 4512188 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 23012021100 its reverse (112021032), we get a palindrome (23124042132).

The spelling of 23012021100 in words is "twenty-three billion, twelve million, twenty-one thousand, one hundred".