121391102 has 32 divisors (see below), whose sum is σ = 224169984. Its totient is φ = 48153600.

The previous prime is 121391099. The next prime is 121391111. The reversal of 121391102 is 201193121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3902 + ... + 16062.

It is an arithmetic number, because the mean of its divisors is an integer number (7005312).

Almost surely, 2^121391102 is an apocalyptic number.

121391102 is a deficient number, since it is larger than the sum of its proper divisors (102778882).

121391102 is a wasteful number, since it uses less digits than its factorization.

121391102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12224.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 121391102 is about 11017.7630215938. The cubic root of 121391102 is about 495.1410705633.

The spelling of 121391102 in words is "one hundred twenty-one million, three hundred ninety-one thousand, one hundred two".