12365254652421 has 8 divisors (see below), whose sum is σ = 17985824949024. Its totient is φ = 7494093728720.

The previous prime is 12365254652383. The next prime is 12365254652497. The reversal of 12365254652421 is 12425645256321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12365254652421 - 2¹³ = 12365254644229 is a prime.

It is a super-2 number, since 2×12365254652421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12365254642421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187352343186 + ... + 187352343251.

It is an arithmetic number, because the mean of its divisors is an integer number (2248228118628).

Almost surely, 2^{12365254652421} is an apocalyptic number.

12365254652421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12365254652421 is a deficient number, since it is larger than the sum of its proper divisors (5620570296603).

12365254652421 is a wasteful number, since it uses less digits than its factorization.

12365254652421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374704686451.

The product of its digits is 3456000, while the sum is 48.

The spelling of 12365254652421 in words is "twelve trillion, three hundred sixty-five billion, two hundred fifty-four million, six hundred fifty-two thousand, four hundred twenty-one".