21134100200 has 48 divisors (see below), whose sum is σ = 49688923500. Its totient is φ = 8358648320.

The previous prime is 21134100187. The next prime is 21134100227. The reversal of 21134100200 is 200143112.

It can be written as a sum of positive squares in 6 ways, for example, as 8900412964 + 12233687236 = 94342^2 + 110606^2 .

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, 575855 + ... + 611454.

Almost surely, 2^21134100200 is an apocalyptic number.

21134100200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21134100200 is an abundant number, since it is smaller than the sum of its proper divisors (28554823300).

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

21134100200 is a wasteful number, since it uses less digits than its factorization.

21134100200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187414 (or 1187405 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21134100200 its reverse (200143112), we get a palindrome (21334243312).

The spelling of 21134100200 in words is "twenty-one billion, one hundred thirty-four million, one hundred thousand, two hundred".