102117212 has 6 divisors (see below), whose sum is σ = 178705128. Its totient is φ = 51058604.

The previous prime is 102117209. The next prime is 102117227. The reversal of 102117212 is 212711201.

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, 12764648 + ... + 12764655.

It is an arithmetic number, because the mean of its divisors is an integer number (29784188).

Almost surely, 2^102117212 is an apocalyptic number.

It is an amenable number.

102117212 is a deficient number, since it is larger than the sum of its proper divisors (76587916).

102117212 is a wasteful number, since it uses less digits than its factorization.

102117212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25529307 (or 25529305 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 102117212 is about 10105.3061309393. The cubic root of 102117212 is about 467.4117758919.

Adding to 102117212 its reverse (212711201), we get a palindrome (314828413).

The spelling of 102117212 in words is "one hundred two million, one hundred seventeen thousand, two hundred twelve".