21211012102112 has 24 divisors (see below), whose sum is σ = 47724777230256. Its totient is φ = 9090433757952.

The previous prime is 21211012102103. The next prime is 21211012102157. The reversal of 21211012102112 is 21120121011212.

It is a super-2 number, since 2×21211012102112² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 47346008933 + ... + 47346009380.

It is an arithmetic number, because the mean of its divisors is an integer number (1988532384594).

Almost surely, 2^{21211012102112} is an apocalyptic number.

It is an amenable number.

21211012102112 is an abundant number, since it is smaller than the sum of its proper divisors (26513765128144).

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

21211012102112 is an equidigital number, since it uses as much as digits as its factorization.

21211012102112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94692018330 (or 94692018322 counting only the distinct ones).

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

Adding to 21211012102112 its reverse (21120121011212), we get a palindrome (42331133113324).

The spelling of 21211012102112 in words is "twenty-one trillion, two hundred eleven billion, twelve million, one hundred two thousand, one hundred twelve".