13220201173 has 2 divisors, whose sum is σ = 13220201174. Its totient is φ = 13220201172.

The previous prime is 13220201167. The next prime is 13220201237. The reversal of 13220201173 is 37110202231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13199022769 + 21178404 = 114887^2 + 4602^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13220201173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13220201573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610100586 + 6610100587.

It is an arithmetic number, because the mean of its divisors is an integer number (6610100587).

Almost surely, 2^13220201173 is an apocalyptic number.

It is an amenable number.

13220201173 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220201173 is an equidigital number, since it uses as much as digits as its factorization.

13220201173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The spelling of 13220201173 in words is "thirteen billion, two hundred twenty million, two hundred one thousand, one hundred seventy-three".