12127522724 has 6 divisors (see below), whose sum is σ = 21223164774. Its totient is φ = 6063761360.

The previous prime is 12127522723. The next prime is 12127522733. The reversal of 12127522724 is 42722572121.

It can be written as a sum of positive squares in only one way, i.e., 11352902500 + 774620224 = 106550^2 + 27832^2 .

It is a super-2 number, since 2×12127522724² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12127522723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515940337 + ... + 1515940344.

It is an arithmetic number, because the mean of its divisors is an integer number (3537194129).

Almost surely, 2^12127522724 is an apocalyptic number.

It is an amenable number.

12127522724 is a deficient number, since it is larger than the sum of its proper divisors (9095642050).

12127522724 is a wasteful number, since it uses less digits than its factorization.

12127522724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031880685 (or 3031880683 counting only the distinct ones).

The product of its digits is 31360, while the sum is 35.

The spelling of 12127522724 in words is "twelve billion, one hundred twenty-seven million, five hundred twenty-two thousand, seven hundred twenty-four".