21211012120112 has 20 divisors (see below), whose sum is σ = 41291105354136. Its totient is φ = 10555242996480.

The previous prime is 21211012120099. The next prime is 21211012120127. The reversal of 21211012120112 is 21102121011212.

It is a super-2 number, since 2×21211012120112² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3141437993 + ... + 3141444744.

Almost surely, 2^{21211012120112} is an apocalyptic number.

It is an amenable number.

21211012120112 is a deficient number, since it is larger than the sum of its proper divisors (20080093234024).

21211012120112 is a wasteful number, since it uses less digits than its factorization.

21211012120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6282882956 (or 6282882950 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21211012120112 its reverse (21102121011212), we get a palindrome (42313133131324).

The spelling of 21211012120112 in words is "twenty-one trillion, two hundred eleven billion, twelve million, one hundred twenty thousand, one hundred twelve".