102112100212 has 6 divisors (see below), whose sum is σ = 178696175378. Its totient is φ = 51056050104.

The previous prime is 102112100137. The next prime is 102112100239. The reversal of 102112100212 is 212001211201.

It can be written as a sum of positive squares in only one way, i.e., 93658033296 + 8454066916 = 306036^2 + 91946^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102112100192 and 102112100201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12764012523 + ... + 12764012530.

Almost surely, 2^102112100212 is an apocalyptic number.

It is an amenable number.

102112100212 is a deficient number, since it is larger than the sum of its proper divisors (76584075166).

102112100212 is a wasteful number, since it uses less digits than its factorization.

102112100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25528025057 (or 25528025055 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102112100212 its reverse (212001211201), we get a palindrome (314113311413).

The spelling of 102112100212 in words is "one hundred two billion, one hundred twelve million, one hundred thousand, two hundred twelve".