21500600212 has 48 divisors (see below), whose sum is σ = 46340207872. Its totient is φ = 8499997440.

The previous prime is 21500600201. The next prime is 21500600221. The reversal of 21500600212 is 21200600512.

It is a self number, because there is not a number n which added to its sum of digits gives 21500600212.

It is a congruent number.

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, 542512 + ... + 580792.

Almost surely, 2^21500600212 is an apocalyptic number.

It is an amenable number.

21500600212 is an abundant number, since it is smaller than the sum of its proper divisors (24839607660).

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

21500600212 is a wasteful number, since it uses less digits than its factorization.

21500600212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39848 (or 39846 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The spelling of 21500600212 in words is "twenty-one billion, five hundred million, six hundred thousand, two hundred twelve".