123012111102 has 32 divisors (see below), whose sum is σ = 248357709600. Its totient is φ = 40615354368.

The previous prime is 123012111091. The next prime is 123012111107. The reversal of 123012111102 is 201111210321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012111107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2233674 + ... + 2288082.

It is an arithmetic number, because the mean of its divisors is an integer number (7761178425).

Almost surely, 2^123012111102 is an apocalyptic number.

123012111102 is an abundant number, since it is smaller than the sum of its proper divisors (125345598498).

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

123012111102 is a wasteful number, since it uses less digits than its factorization.

123012111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57980.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 123012111102 its reverse (201111210321), we get a palindrome (324123321423).

The spelling of 123012111102 in words is "one hundred twenty-three billion, twelve million, one hundred eleven thousand, one hundred two".