12162274225921 has 4 divisors (see below), whose sum is σ = 12163115978500. Its totient is φ = 12161432473344.

The previous prime is 12162274225879. The next prime is 12162274225967. The reversal of 12162274225921 is 12952247226121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8546039536321 + 3616234689600 = 2923361^2 + 1901640^2 .

It is a cyclic number.

It is not a de Polignac number, because 12162274225921 - 2¹¹ = 12162274223873 is a prime.

It is a super-3 number, since 3×12162274225921³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12162275225921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420854616 + ... + 420883513.

It is an arithmetic number, because the mean of its divisors is an integer number (3040778994625).

Almost surely, 2^{12162274225921} is an apocalyptic number.

It is an amenable number.

12162274225921 is a deficient number, since it is larger than the sum of its proper divisors (841752579).

12162274225921 is an equidigital number, since it uses as much as digits as its factorization.

12162274225921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841752578.

The product of its digits is 483840, while the sum is 46.

The spelling of 12162274225921 in words is "twelve trillion, one hundred sixty-two billion, two hundred seventy-four million, two hundred twenty-five thousand, nine hundred twenty-one".