102111012112 has 20 divisors (see below), whose sum is σ = 197943564060. Its totient is φ = 51028802048.

The previous prime is 102111012109. The next prime is 102111012121. The reversal of 102111012112 is 211210111201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 33322311936 + 68788700176 = 182544^2 + 262276^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102111012092 and 102111012101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1637437 + ... + 1698652.

It is an arithmetic number, because the mean of its divisors is an integer number (9897178203).

Almost surely, 2^102111012112 is an apocalyptic number.

It is an amenable number.

102111012112 is a deficient number, since it is larger than the sum of its proper divisors (95832551948).

102111012112 is a wasteful number, since it uses less digits than its factorization.

102111012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338010 (or 3338004 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102111012112 its reverse (211210111201), we get a palindrome (313321123313).

The spelling of 102111012112 in words is "one hundred two billion, one hundred eleven million, twelve thousand, one hundred twelve".