21195090300 has 36 divisors (see below), whose sum is σ = 61324462136. Its totient is φ = 5652024000.

The previous prime is 21195090281. The next prime is 21195090313. The reversal of 21195090300 is 309059112.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 35324851 + ... + 35325450.

Almost surely, 2^21195090300 is an apocalyptic number.

21195090300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21195090300 is an abundant number, since it is smaller than the sum of its proper divisors (40129371836).

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

21195090300 is a wasteful number, since it uses less digits than its factorization.

21195090300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70650318 (or 70650311 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 30.

The spelling of 21195090300 in words is "twenty-one billion, one hundred ninety-five million, ninety thousand, three hundred".