21838202200 has 48 divisors (see below), whose sum is σ = 51854136480. Its totient is φ = 8549420160.

The previous prime is 21838202179. The next prime is 21838202201. The reversal of 21838202200 is 220283812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21838202201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1152207 + ... + 1171006.

It is an arithmetic number, because the mean of its divisors is an integer number (1080294510).

Almost surely, 2^21838202200 is an apocalyptic number.

21838202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21838202200 is an abundant number, since it is smaller than the sum of its proper divisors (30015934280).

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

21838202200 is a wasteful number, since it uses less digits than its factorization.

21838202200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323276 (or 2323267 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 21838202200 in words is "twenty-one billion, eight hundred thirty-eight million, two hundred two thousand, two hundred".