21112665362112 has 56 divisors (see below), whose sum is σ = 55866416854192. Its totient is φ = 7036821504000.

The previous prime is 21112665362099. The next prime is 21112665362153. The reversal of 21112665362112 is 21126356621112.

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 7 ways as a sum of consecutive naturals, for example, 3883189 + ... + 7569972.

It is an arithmetic number, because the mean of its divisors is an integer number (997614586682).

Almost surely, 2^{21112665362112} is an apocalyptic number.

It is an amenable number.

21112665362112 is an abundant number, since it is smaller than the sum of its proper divisors (34753751492080).

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

21112665362112 is a wasteful number, since it uses less digits than its factorization.

21112665362112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11462777 (or 11462767 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The spelling of 21112665362112 in words is "twenty-one trillion, one hundred twelve billion, six hundred sixty-five million, three hundred sixty-two thousand, one hundred twelve".