21023313112020 has 24 divisors (see below), whose sum is σ = 58865276713824. Its totient is φ = 5606216829856.

The previous prime is 21023313112007. The next prime is 21023313112033. The reversal of 21023313112020 is 2021131332012.

It is an interprime number because it is at equal distance from previous prime (21023313112007) and next prime (21023313112033).

It is a congruent number.

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, 175194275874 + ... + 175194275993.

It is an arithmetic number, because the mean of its divisors is an integer number (2452719863076).

Almost surely, 2^{21023313112020} is an apocalyptic number.

21023313112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21023313112020 is an abundant number, since it is smaller than the sum of its proper divisors (37841963601804).

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

21023313112020 is a wasteful number, since it uses less digits than its factorization.

21023313112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350388551879 (or 350388551877 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21023313112020 its reverse (2021131332012), we get a palindrome (23044444444032).

The spelling of 21023313112020 in words is "twenty-one trillion, twenty-three billion, three hundred thirteen million, one hundred twelve thousand, twenty".