21113215114612 has 24 divisors (see below), whose sum is σ = 37165973312160. Its totient is φ = 10494401892000.

The previous prime is 21113215114609. The next prime is 21113215114637. The reversal of 21113215114612 is 21641151231112.

It is a congruent number.

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, 2207463 + ... + 6862894.

It is an arithmetic number, because the mean of its divisors is an integer number (1548582221340).

Almost surely, 2^{21113215114612} is an apocalyptic number.

It is an amenable number.

21113215114612 is a deficient number, since it is larger than the sum of its proper divisors (16052758197548).

21113215114612 is a wasteful number, since it uses less digits than its factorization.

21113215114612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9073791 (or 9073789 counting only the distinct ones).

The product of its digits is 2880, while the sum is 31.

Adding to 21113215114612 its reverse (21641151231112), we get a palindrome (42754366345724).

The spelling of 21113215114612 in words is "twenty-one trillion, one hundred thirteen billion, two hundred fifteen million, one hundred fourteen thousand, six hundred twelve".