123100120223112 has 128 divisors (see below), whose sum is σ = 327112536326400. Its totient is φ = 38470416211968.

The previous prime is 123100120223111. The next prime is 123100120223117. The reversal of 123100120223112 is 211322021001321.

It is not an unprimeable number, because it can be changed into a prime (123100120223111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2647917564 + ... + 2647964052.

It is an arithmetic number, because the mean of its divisors is an integer number (2555566690050).

Almost surely, 2^{123100120223112} is an apocalyptic number.

123100120223112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123100120223112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163556268163200).

123100120223112 is an abundant number, since it is smaller than the sum of its proper divisors (204012416103288).

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

123100120223112 is a wasteful number, since it uses less digits than its factorization.

123100120223112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71455 (or 71451 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 123100120223112 its reverse (211322021001321), we get a palindrome (334422141224433).

The spelling of 123100120223112 in words is "one hundred twenty-three trillion, one hundred billion, one hundred twenty million, two hundred twenty-three thousand, one hundred twelve".