12077121572 has 72 divisors (see below), whose sum is σ = 23316220200. Its totient is φ = 5465972736.

The previous prime is 12077121569. The next prime is 12077121583. The reversal of 12077121572 is 27512177021.

It can be written as a sum of positive squares in 12 ways, for example, as 580135396 + 11496986176 = 24086^2 + 107224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11297054 + ... + 11298122.

Almost surely, 2^12077121572 is an apocalyptic number.

It is an amenable number.

12077121572 is a deficient number, since it is larger than the sum of its proper divisors (11239098628).

12077121572 is a wasteful number, since it uses less digits than its factorization.

12077121572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473 (or 1454 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 35.

Adding to 12077121572 its reverse (27512177021), we get a palindrome (39589298593).

The spelling of 12077121572 in words is "twelve billion, seventy-seven million, one hundred twenty-one thousand, five hundred seventy-two".