21200010111210 has 128 divisors (see below), whose sum is σ = 60618662903808. Its totient is φ = 4642973280000.

The previous prime is 21200010111113. The next prime is 21200010111257. The reversal of 21200010111210 is 1211101000212.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 15463926 + ... + 16778945.

It is an arithmetic number, because the mean of its divisors is an integer number (473583303936).

Almost surely, 2^{21200010111210} is an apocalyptic number.

21200010111210 is an abundant number, since it is smaller than the sum of its proper divisors (39418652792598).

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

21200010111210 is a wasteful number, since it uses less digits than its factorization.

21200010111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32243020.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21200010111210 its reverse (1211101000212), we get a palindrome (22411111111422).

The spelling of 21200010111210 in words is "twenty-one trillion, two hundred billion, ten million, one hundred eleven thousand, two hundred ten".