121550250 has 64 divisors (see below), whose sum is σ = 310527360. Its totient is φ = 31651200.

The previous prime is 121550179. The next prime is 121550267. The reversal of 121550250 is 52055121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30366 + ... + 34134.

It is an arithmetic number, because the mean of its divisors is an integer number (4851990).

Almost surely, 2^121550250 is an apocalyptic number.

121550250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121550250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155263680).

121550250 is an abundant number, since it is smaller than the sum of its proper divisors (188977110).

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

121550250 is a wasteful number, since it uses less digits than its factorization.

121550250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3832 (or 3822 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 121550250 is about 11024.9829931842. The cubic root of 121550250 is about 495.3573585175.

The spelling of 121550250 in words is "one hundred twenty-one million, five hundred fifty thousand, two hundred fifty".