12572227521 has 48 divisors (see below), whose sum is σ = 21535206784. Its totient is φ = 6917778432.

The previous prime is 12572227519. The next prime is 12572227579.

12572227521 is a `hidden beast` number, since 12 + 572 + 2 + 2 + 75 + 2 + 1 = 666.

12572227521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12572227521 - 2¹ = 12572227519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12572227121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 198306 + ... + 253908.

Almost surely, 2^12572227521 is an apocalyptic number.

It is an amenable number.

12572227521 is a deficient number, since it is larger than the sum of its proper divisors (8962979263).

12572227521 is a wasteful number, since it uses less digits than its factorization.

12572227521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55750 (or 55747 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The spelling of 12572227521 in words is "twelve billion, five hundred seventy-two million, two hundred twenty-seven thousand, five hundred twenty-one".