22353539121 has 81 divisors (see below), whose sum is σ = 35469517707. Its totient is φ = 13563637920.

The previous prime is 22353539119. The next prime is 22353539123. The reversal of 22353539121 is 12193535322.

The square root of 22353539121 is 149511.

It is a perfect power (a square), and thus also a powerful number.

22353539121 is a `hidden beast` number, since 2 + 235 + 35 + 391 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (22353539119) and next prime (22353539123).

It can be written as a sum of positive squares in only one way, i.e., 726895521 + 21626643600 = 26961^2 + 147060^2 .

It is not a de Polignac number, because 22353539121 - 2¹ = 22353539119 is a prime.

It is a super-2 number, since 2×22353539121² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22353539123) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 366451431 + ... + 366451491.

Almost surely, 2^22353539121 is an apocalyptic number.

22353539121 is the 149511-st square number.

22353539121 is the 74756-th centered octagonal number.

It is an amenable number.

22353539121 is a deficient number, since it is larger than the sum of its proper divisors (13115978586).

22353539121 is an equidigital number, since it uses as much as digits as its factorization.

22353539121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 126 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

Multiplying 22353539121 by its sum of digits (36), we get a square (804727408356 = 897066²).

The spelling of 22353539121 in words is "twenty-two billion, three hundred fifty-three million, five hundred thirty-nine thousand, one hundred twenty-one".