21163132021115 has 8 divisors (see below), whose sum is σ = 29023723914720. Its totient is φ = 14511861957312.

The previous prime is 21163132021063. The next prime is 21163132021123. The reversal of 21163132021115 is 51112023136112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21163132021115 - 2¹⁶ = 21163131955579 is a prime.

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, 302330457410 + ... + 302330457479.

It is an arithmetic number, because the mean of its divisors is an integer number (3627965489340).

Almost surely, 2^{21163132021115} is an apocalyptic number.

21163132021115 is a deficient number, since it is larger than the sum of its proper divisors (7860591893605).

21163132021115 is an equidigital number, since it uses as much as digits as its factorization.

21163132021115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604660914901.

The product of its (nonzero) digits is 2160, while the sum is 29.

Adding to 21163132021115 its reverse (51112023136112), we get a palindrome (72275155157227).

The spelling of 21163132021115 in words is "twenty-one trillion, one hundred sixty-three billion, one hundred thirty-two million, twenty-one thousand, one hundred fifteen".