113221013123 has 2 divisors, whose sum is σ = 113221013124. Its totient is φ = 113221013122.

The previous prime is 113221013117. The next prime is 113221013203. The reversal of 113221013123 is 321310122311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113221013123 - 2³² = 108926045827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113221013095 and 113221013104.

It is not a weakly prime, because it can be changed into another prime (113221043123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56610506561 + 56610506562.

It is an arithmetic number, because the mean of its divisors is an integer number (56610506562).

Almost surely, 2^113221013123 is an apocalyptic number.

113221013123 is a deficient number, since it is larger than the sum of its proper divisors (1).

113221013123 is an equidigital number, since it uses as much as digits as its factorization.

113221013123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 113221013123 its reverse (321310122311), we get a palindrome (434531135434).

The spelling of 113221013123 in words is "one hundred thirteen billion, two hundred twenty-one million, thirteen thousand, one hundred twenty-three".