21230113130220 has 48 divisors (see below), whose sum is σ = 59524322699520. Its totient is φ = 5653743888576.

The previous prime is 21230113130189. The next prime is 21230113130249. The reversal of 21230113130220 is 2203131103212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238067950 + ... + 238157109.

It is an arithmetic number, because the mean of its divisors is an integer number (1240090056240).

Almost surely, 2^{21230113130220} is an apocalyptic number.

21230113130220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21230113130220 is an abundant number, since it is smaller than the sum of its proper divisors (38294209569300).

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

21230113130220 is a wasteful number, since it uses less digits than its factorization.

21230113130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476225814 (or 476225812 counting only the distinct ones).

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

Adding to 21230113130220 its reverse (2203131103212), we get a palindrome (23433244233432).

The spelling of 21230113130220 in words is "twenty-one trillion, two hundred thirty billion, one hundred thirteen million, one hundred thirty thousand, two hundred twenty".