22215505235121 has 12 divisors (see below), whose sum is σ = 35006250673680. Its totient is φ = 13463942566680.

The previous prime is 22215505235089. The next prime is 22215505235129. The reversal of 22215505235121 is 12153250551222.

22215505235121 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 5 + 5 + 0 + 523 + 5 + 121 = 666.

It is not a de Polignac number, because 22215505235121 - 2⁵ = 22215505235089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22215505235129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112199521291 + ... + 112199521488.

It is an arithmetic number, because the mean of its divisors is an integer number (2917187556140).

Almost surely, 2^{22215505235121} is an apocalyptic number.

It is an amenable number.

22215505235121 is a deficient number, since it is larger than the sum of its proper divisors (12790745438559).

22215505235121 is a wasteful number, since it uses less digits than its factorization.

22215505235121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224399042796 (or 224399042793 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 22215505235121 its reverse (12153250551222), we get a palindrome (34368755786343).

The spelling of 22215505235121 in words is "twenty-two trillion, two hundred fifteen billion, five hundred five million, two hundred thirty-five thousand, one hundred twenty-one".