12122551124 has 12 divisors (see below), whose sum is σ = 21215249748. Its totient is φ = 6061051200.

The previous prime is 12122551123. The next prime is 12122551127. The reversal of 12122551124 is 42115522121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1292402500 + 10830148624 = 35950^2 + 104068^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12122551093 and 12122551102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122551121) 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, 147944 + ... + 214784.

It is an arithmetic number, because the mean of its divisors is an integer number (1767937479).

Almost surely, 2^12122551124 is an apocalyptic number.

It is an amenable number.

12122551124 is a deficient number, since it is larger than the sum of its proper divisors (9092698624).

12122551124 is a wasteful number, since it uses less digits than its factorization.

12122551124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112186 (or 112184 counting only the distinct ones).

The product of its digits is 1600, while the sum is 26.

The spelling of 12122551124 in words is "twelve billion, one hundred twenty-two million, five hundred fifty-one thousand, one hundred twenty-four".