21140402200 has 24 divisors (see below), whose sum is σ = 49151435580. Its totient is φ = 8456160800.

The previous prime is 21140402191. The next prime is 21140402209. The reversal of 21140402200 is 220404112.

It is an interprime number because it is at equal distance from previous prime (21140402191) and next prime (21140402209).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140402209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52850806 + ... + 52851205.

Almost surely, 2^21140402200 is an apocalyptic number.

21140402200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21140402200 is an abundant number, since it is smaller than the sum of its proper divisors (28011033380).

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

21140402200 is a wasteful number, since it uses less digits than its factorization.

21140402200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105702027 (or 105702018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21140402200 its reverse (220404112), we get a palindrome (21360806312).

The spelling of 21140402200 in words is "twenty-one billion, one hundred forty million, four hundred two thousand, two hundred".