121363656 has 16 divisors (see below), whose sum is σ = 303409200. Its totient is φ = 40454544.

The previous prime is 121363643. The next prime is 121363657. The reversal of 121363656 is 656363121.

It is not an unprimeable number, because it can be changed into a prime (121363657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2528386 + ... + 2528433.

It is an arithmetic number, because the mean of its divisors is an integer number (18963075).

Almost surely, 2^121363656 is an apocalyptic number.

It is an amenable number.

121363656 is an abundant number, since it is smaller than the sum of its proper divisors (182045544).

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

121363656 is a wasteful number, since it uses less digits than its factorization.

121363656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5056828 (or 5056824 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 121363656 is about 11016.5174170425. The cubic root of 121363656 is about 495.1037513367.

The spelling of 121363656 in words is "one hundred twenty-one million, three hundred sixty-three thousand, six hundred fifty-six".