12252343217421 has 16 divisors (see below), whose sum is σ = 17307547214400. Its totient is φ = 7683246321408.

The previous prime is 12252343217407. The next prime is 12252343217447. The reversal of 12252343217421 is 12471234325221.

It is not a de Polignac number, because 12252343217421 - 2⁷ = 12252343217293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12252343217421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12252343210421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70200151 + ... + 70374468.

It is an arithmetic number, because the mean of its divisors is an integer number (1081721700900).

Almost surely, 2^{12252343217421} is an apocalyptic number.

It is an amenable number.

12252343217421 is a deficient number, since it is larger than the sum of its proper divisors (5055203996979).

12252343217421 is a wasteful number, since it uses less digits than its factorization.

12252343217421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140576348.

The product of its digits is 161280, while the sum is 39.

The spelling of 12252343217421 in words is "twelve trillion, two hundred fifty-two billion, three hundred forty-three million, two hundred seventeen thousand, four hundred twenty-one".