121636850 has 12 divisors (see below), whose sum is σ = 226244634. Its totient is φ = 48654720.

The previous prime is 121636847. The next prime is 121636909. The reversal of 121636850 is 58636121.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 109851361 + 11785489 = 10481^2 + 3433^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1216319 + ... + 1216418.

Almost surely, 2^121636850 is an apocalyptic number.

121636850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121636850 is a deficient number, since it is larger than the sum of its proper divisors (104607784).

121636850 is a wasteful number, since it uses less digits than its factorization.

121636850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432749 (or 2432744 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 121636850 is about 11028.9097375942. The cubic root of 121636850 is about 495.4749717778.

The spelling of 121636850 in words is "one hundred twenty-one million, six hundred thirty-six thousand, eight hundred fifty".