23211421202115 has 64 divisors (see below), whose sum is σ = 41364748830720. Its totient is φ = 12349455955200.

The previous prime is 23211421202111. The next prime is 23211421202131. The reversal of 23211421202115 is 51120212411232.

23211421202115 is a `hidden beast` number, since 2 + 3 + 2 + 1 + 1 + 421 + 20 + 211 + 5 = 666.

It is not a de Polignac number, because 23211421202115 - 2² = 23211421202111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23211421202111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 107558352 + ... + 107773938.

It is an arithmetic number, because the mean of its divisors is an integer number (646324200480).

Almost surely, 2^{23211421202115} is an apocalyptic number.

23211421202115 is a deficient number, since it is larger than the sum of its proper divisors (18153327628605).

23211421202115 is a wasteful number, since it uses less digits than its factorization.

23211421202115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217529 (or 217523 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 23211421202115 its reverse (51120212411232), we get a palindrome (74331633613347).

The spelling of 23211421202115 in words is "twenty-three trillion, two hundred eleven billion, four hundred twenty-one million, two hundred two thousand, one hundred fifteen".