102123111112 has 32 divisors (see below), whose sum is σ = 210956400000. Its totient is φ = 45959992000.

The previous prime is 102123111091. The next prime is 102123111131. The reversal of 102123111112 is 211111321201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5736112 + ... + 5753887.

It is an arithmetic number, because the mean of its divisors is an integer number (6592387500).

Almost surely, 2^102123111112 is an apocalyptic number.

It is an amenable number.

102123111112 is an abundant number, since it is smaller than the sum of its proper divisors (108833288888).

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

102123111112 is a wasteful number, since it uses less digits than its factorization.

102123111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11490117 (or 11490113 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 102123111112 its reverse (211111321201), we get a palindrome (313234432313).

The spelling of 102123111112 in words is "one hundred two billion, one hundred twenty-three million, one hundred eleven thousand, one hundred twelve".