21103300023020 has 48 divisors (see below), whose sum is σ = 45348195180288. Its totient is φ = 8244894087360.

The previous prime is 21103300022993. The next prime is 21103300023023. The reversal of 21103300023020 is 2032000330112.

It is a self number, because there is not a number n which added to its sum of digits gives 21103300023020.

It is not an unprimeable number, because it can be changed into a prime (21103300023023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85693865 + ... + 85939775.

It is an arithmetic number, because the mean of its divisors is an integer number (944754066256).

Almost surely, 2^{21103300023020} is an apocalyptic number.

21103300023020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21103300023020 is an abundant number, since it is smaller than the sum of its proper divisors (24244895157268).

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

21103300023020 is a wasteful number, since it uses less digits than its factorization.

21103300023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345750 (or 345748 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21103300023020 its reverse (2032000330112), we get a palindrome (23135300353132).

The spelling of 21103300023020 in words is "twenty-one trillion, one hundred three billion, three hundred million, twenty-three thousand, twenty".