123112223130 has 64 divisors (see below), whose sum is σ = 322556693760. Its totient is φ = 29889409536.

The previous prime is 123112223123. The next prime is 123112223159. The reversal of 123112223130 is 31322211321.

It is a junction number, because it is equal to n+sod(n) for n = 123112223097 and 123112223106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2133670 + ... + 2190609.

It is an arithmetic number, because the mean of its divisors is an integer number (5039948340).

Almost surely, 2^123112223130 is an apocalyptic number.

123112223130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123112223130 is an abundant number, since it is smaller than the sum of its proper divisors (199444470630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123112223130 is a wasteful number, since it uses less digits than its factorization.

123112223130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324375.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123112223130 its reverse (31322211321), we get a palindrome (154434434451).

The spelling of 123112223130 in words is "one hundred twenty-three billion, one hundred twelve million, two hundred twenty-three thousand, one hundred thirty".