12225217424892 has 24 divisors (see below), whose sum is σ = 29509145509200. Its totient is φ = 3934552734336.

The previous prime is 12225217424743. The next prime is 12225217424911. The reversal of 12225217424892 is 29842471252221.

It is a super-2 number, since 2×12225217424892² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 17564967217 + ... + 17564967912.

It is an arithmetic number, because the mean of its divisors is an integer number (1229547729550).

Almost surely, 2^{12225217424892} is an apocalyptic number.

12225217424892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12225217424892 is an abundant number, since it is smaller than the sum of its proper divisors (17283928084308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12225217424892 is a wasteful number, since it uses less digits than its factorization.

12225217424892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35129935165 (or 35129935163 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 51.

The spelling of 12225217424892 in words is "twelve trillion, two hundred twenty-five billion, two hundred seventeen million, four hundred twenty-four thousand, eight hundred ninety-two".