113221223173 has 2 divisors, whose sum is σ = 113221223174. Its totient is φ = 113221223172.

The previous prime is 113221223149. The next prime is 113221223191. The reversal of 113221223173 is 371322122311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91069961284 + 22151261889 = 301778^2 + 148833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113221223173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113221223123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56610611586 + 56610611587.

It is an arithmetic number, because the mean of its divisors is an integer number (56610611587).

Almost surely, 2^113221223173 is an apocalyptic number.

It is an amenable number.

113221223173 is a deficient number, since it is larger than the sum of its proper divisors (1).

113221223173 is an equidigital number, since it uses as much as digits as its factorization.

113221223173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

Adding to 113221223173 its reverse (371322122311), we get a palindrome (484543345484).

The spelling of 113221223173 in words is "one hundred thirteen billion, two hundred twenty-one million, two hundred twenty-three thousand, one hundred seventy-three".