21060712200 has 96 divisors (see below), whose sum is σ = 71223521760. Its totient is φ = 5105625600.

The previous prime is 21060712181. The next prime is 21060712201. The reversal of 21060712200 is 221706012.

It is not an unprimeable number, because it can be changed into a prime (21060712201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1588909 + ... + 1602108.

It is an arithmetic number, because the mean of its divisors is an integer number (741911685).

Almost surely, 2^21060712200 is an apocalyptic number.

21060712200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21060712200 is an abundant number, since it is smaller than the sum of its proper divisors (50162809560).

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

21060712200 is a wasteful number, since it uses less digits than its factorization.

21060712200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191047 (or 3191038 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The spelling of 21060712200 in words is "twenty-one billion, sixty million, seven hundred twelve thousand, two hundred".