21214415115315 has 64 divisors (see below), whose sum is σ = 37971763200000. Its totient is φ = 11237197037184.

The previous prime is 21214415115251. The next prime is 21214415115323. The reversal of 21214415115315 is 51351151441212.

It is a happy number.

21214415115315 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 441 + 51 + 153 + 15 = 666.

It is not a de Polignac number, because 21214415115315 - 2⁶ = 21214415115251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21214415115315.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 202686766 + ... + 202791404.

It is an arithmetic number, because the mean of its divisors is an integer number (593308800000).

Almost surely, 2^{21214415115315} is an apocalyptic number.

21214415115315 is a deficient number, since it is larger than the sum of its proper divisors (16757348084685).

21214415115315 is a wasteful number, since it uses less digits than its factorization.

21214415115315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114881 (or 114875 counting only the distinct ones).

The product of its digits is 24000, while the sum is 36.

Adding to 21214415115315 its reverse (51351151441212), we get a palindrome (72565566556527).

The spelling of 21214415115315 in words is "twenty-one trillion, two hundred fourteen billion, four hundred fifteen million, one hundred fifteen thousand, three hundred fifteen".