13174572221 has 2 divisors, whose sum is σ = 13174572222. Its totient is φ = 13174572220.

The previous prime is 13174572211. The next prime is 13174572233. The reversal of 13174572221 is 12227547131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9823783225 + 3350788996 = 99115^2 + 57886^2 .

It is a cyclic number.

It is not a de Polignac number, because 13174572221 - 2¹⁴ = 13174555837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13174572211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6587286110 + 6587286111.

It is an arithmetic number, because the mean of its divisors is an integer number (6587286111).

Almost surely, 2^13174572221 is an apocalyptic number.

It is an amenable number.

13174572221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13174572221 is an equidigital number, since it uses as much as digits as its factorization.

13174572221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 35.

The spelling of 13174572221 in words is "thirteen billion, one hundred seventy-four million, five hundred seventy-two thousand, two hundred twenty-one".