12401222432251 has 4 divisors (see below), whose sum is σ = 12703691272104. Its totient is φ = 12098753592400.

The previous prime is 12401222432239. The next prime is 12401222432281. The reversal of 12401222432251 is 15223422210421.

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

It is a cyclic number.

It is not a de Polignac number, because 12401222432251 - 2¹⁷ = 12401222301179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12401222432281) 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, 151234419865 + ... + 151234419946.

It is an arithmetic number, because the mean of its divisors is an integer number (3175922818026).

Almost surely, 2^{12401222432251} is an apocalyptic number.

12401222432251 is a deficient number, since it is larger than the sum of its proper divisors (302468839853).

12401222432251 is an equidigital number, since it uses as much as digits as its factorization.

12401222432251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302468839852.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 12401222432251 its reverse (15223422210421), we get a palindrome (27624644642672).

The spelling of 12401222432251 in words is "twelve trillion, four hundred one billion, two hundred twenty-two million, four hundred thirty-two thousand, two hundred fifty-one".