121363686 has 24 divisors (see below), whose sum is σ = 274388400. Its totient is φ = 38695536.

The previous prime is 121363657. The next prime is 121363687. The reversal of 121363686 is 686363121.

121363686 is a `hidden beast` number, since 1 + 2 + 13 + 636 + 8 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 121363686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121363687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146161 + ... + 146988.

It is an arithmetic number, because the mean of its divisors is an integer number (11432850).

Almost surely, 2^121363686 is an apocalyptic number.

121363686 is an abundant number, since it is smaller than the sum of its proper divisors (153024714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121363686 is a wasteful number, since it uses less digits than its factorization.

121363686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293180 (or 293177 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 121363686 is about 11016.5187786342. The cubic root of 121363686 is about 495.1037921318.

The spelling of 121363686 in words is "one hundred twenty-one million, three hundred sixty-three thousand, six hundred eighty-six".