21202100111012 has 12 divisors (see below), whose sum is σ = 37183126322160. Its totient is φ = 10578349733256.

The previous prime is 21202100110999. The next prime is 21202100111021. The reversal of 21202100111012 is 21011100120212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5675078462 + ... + 5675082197.

It is an arithmetic number, because the mean of its divisors is an integer number (3098593860180).

Almost surely, 2^{21202100111012} is an apocalyptic number.

It is an amenable number.

21202100111012 is a deficient number, since it is larger than the sum of its proper divisors (15981026211148).

21202100111012 is a wasteful number, since it uses less digits than its factorization.

21202100111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11350161130 (or 11350161128 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21202100111012 its reverse (21011100120212), we get a palindrome (42213200231224).

The spelling of 21202100111012 in words is "twenty-one trillion, two hundred two billion, one hundred million, one hundred eleven thousand, twelve".