21130011021320 has 32 divisors (see below), whose sum is σ = 48115326309120. Its totient is φ = 8350173028800.

The previous prime is 21130011021253. The next prime is 21130011021433. The reversal of 21130011021320 is 2312011003112.

It is a super-2 number, since 2×21130011021320² (a number of 27 digits) contains 22 as substring.

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, 3182227256 + ... + 3182233895.

It is an arithmetic number, because the mean of its divisors is an integer number (1503603947160).

Almost surely, 2^{21130011021320} is an apocalyptic number.

21130011021320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21130011021320 is an abundant number, since it is smaller than the sum of its proper divisors (26985315287800).

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

21130011021320 is a wasteful number, since it uses less digits than its factorization.

21130011021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364461245 (or 6364461241 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21130011021320 its reverse (2312011003112), we get a palindrome (23442022024432).

The spelling of 21130011021320 in words is "twenty-one trillion, one hundred thirty billion, eleven million, twenty-one thousand, three hundred twenty".