172220002112057 has 2 divisors, whose sum is σ = 172220002112058. Its totient is φ = 172220002112056.

The previous prime is 172220002111991. The next prime is 172220002112083. The reversal of 172220002112057 is 750211200022271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86829391696441 + 85390610415616 = 9318229^2 + 9240704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172220002112057 is a prime.

It is not a weakly prime, because it can be changed into another prime (172220002112087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86110001056028 + 86110001056029.

It is an arithmetic number, because the mean of its divisors is an integer number (86110001056029).

Almost surely, 2^{172220002112057} is an apocalyptic number.

It is an amenable number.

172220002112057 is a deficient number, since it is larger than the sum of its proper divisors (1).

172220002112057 is an equidigital number, since it uses as much as digits as its factorization.

172220002112057 is an evil number, because the sum of its binary digits is even.

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

The spelling of 172220002112057 in words is "one hundred seventy-two trillion, two hundred twenty billion, two million, one hundred twelve thousand, fifty-seven".