21132210300 has 72 divisors (see below), whose sum is σ = 61207915776. Its totient is φ = 5629229760.

The previous prime is 21132210289. The next prime is 21132210313. The reversal of 21132210300 is 301223112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21132210300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246909 + ... + 321291.

Almost surely, 2^21132210300 is an apocalyptic number.

21132210300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21132210300 is an abundant number, since it is smaller than the sum of its proper divisors (40075705476).

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

21132210300 is a wasteful number, since it uses less digits than its factorization.

21132210300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75347 (or 75340 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21132210300 its reverse (301223112), we get a palindrome (21433433412).

The spelling of 21132210300 in words is "twenty-one billion, one hundred thirty-two million, two hundred ten thousand, three hundred".