12251444981 has 16 divisors (see below), whose sum is σ = 12408422400. Its totient is φ = 12095892480.

The previous prime is 12251444963. The next prime is 12251445113. The reversal of 12251444981 is 18944415221.

It is not a de Polignac number, because 12251444981 - 2¹⁸ = 12251182837 is a prime.

It is a super-2 number, since 2×12251444981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12251444941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27285845 + ... + 27286293.

It is an arithmetic number, because the mean of its divisors is an integer number (775526400).

Almost surely, 2^12251444981 is an apocalyptic number.

It is an amenable number.

12251444981 is a deficient number, since it is larger than the sum of its proper divisors (156977419).

12251444981 is a wasteful number, since it uses less digits than its factorization.

12251444981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396.

The product of its digits is 92160, while the sum is 41.

The spelling of 12251444981 in words is "twelve billion, two hundred fifty-one million, four hundred forty-four thousand, nine hundred eighty-one".