102121868 has 12 divisors (see below), whose sum is σ = 179161752. Its totient is φ = 50932800.

The previous prime is 102121853. The next prime is 102121871. The reversal of 102121868 is 868121201.

It is a self number, because there is not a number n which added to its sum of digits gives 102121868.

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, 30230 + ... + 33437.

It is an arithmetic number, because the mean of its divisors is an integer number (14930146).

Almost surely, 2^102121868 is an apocalyptic number.

It is an amenable number.

102121868 is a deficient number, since it is larger than the sum of its proper divisors (77039884).

102121868 is a wasteful number, since it uses less digits than its factorization.

102121868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64072 (or 64070 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 102121868 is about 10105.5365023338. The cubic root of 102121868 is about 467.4188796116.

The spelling of 102121868 in words is "one hundred two million, one hundred twenty-one thousand, eight hundred sixty-eight".