12122642512 has 40 divisors (see below), whose sum is σ = 24177655656. Its totient is φ = 5885607936.

The previous prime is 12122642507. The next prime is 12122642513. The reversal of 12122642512 is 21524622121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2911249936 + 9211392576 = 53956^2 + 95976^2 .

It is a super-2 number, since 2×12122642512² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122642513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8568 + ... + 155944.

Almost surely, 2^12122642512 is an apocalyptic number.

It is an amenable number.

12122642512 is a deficient number, since it is larger than the sum of its proper divisors (12055013144).

12122642512 is a wasteful number, since it uses less digits than its factorization.

12122642512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147535 (or 147529 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The spelling of 12122642512 in words is "twelve billion, one hundred twenty-two million, six hundred forty-two thousand, five hundred twelve".