12251022431 has 2 divisors, whose sum is σ = 12251022432. Its totient is φ = 12251022430.

The previous prime is 12251022419. The next prime is 12251022437. The reversal of 12251022431 is 13422015221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12251022431 is a prime.

It is a super-2 number, since 2×12251022431² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 12251022397 and 12251022406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12251022437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6125511215 + 6125511216.

It is an arithmetic number, because the mean of its divisors is an integer number (6125511216).

Almost surely, 2^12251022431 is an apocalyptic number.

12251022431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12251022431 is an equidigital number, since it uses as much as digits as its factorization.

12251022431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 12251022431 its reverse (13422015221), we get a palindrome (25673037652).

The spelling of 12251022431 in words is "twelve billion, two hundred fifty-one million, twenty-two thousand, four hundred thirty-one".