113222400123 has 64 divisors (see below), whose sum is σ = 179114393600. Its totient is φ = 63577283616.

The previous prime is 113222400121. The next prime is 113222400131. The reversal of 113222400123 is 321004222311.

It is not a de Polignac number, because 113222400123 - 2¹ = 113222400121 is a prime.

It is a super-2 number, since 2×113222400123² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113222400123.

It is not an unprimeable number, because it can be changed into a prime (113222400121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31918836 + ... + 31922382.

It is an arithmetic number, because the mean of its divisors is an integer number (2798662400).

Almost surely, 2^113222400123 is an apocalyptic number.

113222400123 is a deficient number, since it is larger than the sum of its proper divisors (65891993477).

113222400123 is an equidigital number, since it uses as much as digits as its factorization.

113222400123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101 (or 4087 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 113222400123 its reverse (321004222311), we get a palindrome (434226622434).

The spelling of 113222400123 in words is "one hundred thirteen billion, two hundred twenty-two million, four hundred thousand, one hundred twenty-three".