13021621300 has 36 divisors (see below), whose sum is σ = 29168438656. Its totient is φ = 5040626400.

The previous prime is 13021621247. The next prime is 13021621363. The reversal of 13021621300 is 312612031.

It is a super-2 number, since 2×13021621300² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2097162 + ... + 2103361.

Almost surely, 2^13021621300 is an apocalyptic number.

13021621300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13021621300 is an abundant number, since it is smaller than the sum of its proper divisors (16146817356).

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

13021621300 is a wasteful number, since it uses less digits than its factorization.

13021621300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4200568 (or 4200561 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The spelling of 13021621300 in words is "thirteen billion, twenty-one million, six hundred twenty-one thousand, three hundred".