102111112 has 16 divisors (see below), whose sum is σ = 202720860. Its totient is φ = 48052224.

The previous prime is 102111103. The next prime is 102111151. The reversal of 102111112 is 211111201.

It can be written as a sum of positive squares in 2 ways, for example, as 101082916 + 1028196 = 10054^2 + 1014^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375273 + ... + 375544.

Almost surely, 2^102111112 is an apocalyptic number.

It is an amenable number.

102111112 is a deficient number, since it is larger than the sum of its proper divisors (100609748).

102111112 is a wasteful number, since it uses less digits than its factorization.

102111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750840 (or 750836 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 102111112 is about 10105.0043047987. The cubic root of 102111112 is about 467.4024687159.

Adding to 102111112 its reverse (211111201), we get a palindrome (313222313).

The spelling of 102111112 in words is "one hundred two million, one hundred eleven thousand, one hundred twelve".