12572227121 has 2 divisors, whose sum is σ = 12572227122. Its totient is φ = 12572227120.

The previous prime is 12572227093. The next prime is 12572227163. The reversal of 12572227121 is 12172227521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12290826496 + 281400625 = 110864^2 + 16775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12572227121 is a prime.

It is not a weakly prime, because it can be changed into another prime (12572227321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6286113560 + 6286113561.

It is an arithmetic number, because the mean of its divisors is an integer number (6286113561).

Almost surely, 2^12572227121 is an apocalyptic number.

It is an amenable number.

12572227121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12572227121 is an equidigital number, since it uses as much as digits as its factorization.

12572227121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 32.

The spelling of 12572227121 in words is "twelve billion, five hundred seventy-two million, two hundred twenty-seven thousand, one hundred twenty-one".