21120000211012 has 24 divisors (see below), whose sum is σ = 36996001342272. Its totient is φ = 10549714744800.

The previous prime is 21120000210971. The next prime is 21120000211039. The reversal of 21120000211012 is 21011200002112.

It is a junction number, because it is equal to n+sod(n) for n = 21120000210983 and 21120000211001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187405393 + ... + 187518055.

It is an arithmetic number, because the mean of its divisors is an integer number (1541500055928).

Almost surely, 2^{21120000211012} is an apocalyptic number.

It is an amenable number.

21120000211012 is a deficient number, since it is larger than the sum of its proper divisors (15876001131260).

21120000211012 is a wasteful number, since it uses less digits than its factorization.

21120000211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157899 (or 157897 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21120000211012 its reverse (21011200002112), we get a palindrome (42131200213124).

The spelling of 21120000211012 in words is "twenty-one trillion, one hundred twenty billion, two hundred eleven thousand, twelve".