113221111123 has 2 divisors, whose sum is σ = 113221111124. Its totient is φ = 113221111122.

The previous prime is 113221111111. The next prime is 113221111153. The reversal of 113221111123 is 321111122311.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113221111123 is a prime.

It is a super-2 number, since 2×113221111123² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113221111123.

It is not a weakly prime, because it can be changed into another prime (113221111153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56610555561 + 56610555562.

It is an arithmetic number, because the mean of its divisors is an integer number (56610555562).

Almost surely, 2^113221111123 is an apocalyptic number.

113221111123 is a deficient number, since it is larger than the sum of its proper divisors (1).

113221111123 is an equidigital number, since it uses as much as digits as its factorization.

113221111123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 19.

Adding to 113221111123 its reverse (321111122311), we get a palindrome (434332233434).

The spelling of 113221111123 in words is "one hundred thirteen billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twenty-three".