121670250 has 64 divisors (see below), whose sum is σ = 327075840. Its totient is φ = 29947200.

The previous prime is 121670233. The next prime is 121670251. The reversal of 121670250 is 52076121.

It is a self number, because there is not a number n which added to its sum of digits gives 121670250.

It is not an unprimeable number, because it can be changed into a prime (121670251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3511 + ... + 15989.

It is an arithmetic number, because the mean of its divisors is an integer number (5110560).

Almost surely, 2^121670250 is an apocalyptic number.

121670250 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 121670250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163537920).

121670250 is an abundant number, since it is smaller than the sum of its proper divisors (205405590).

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

121670250 is a wasteful number, since it uses less digits than its factorization.

121670250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12512 (or 12502 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 121670250 is about 11030.4238359185. The cubic root of 121670250 is about 495.5203180950.

The spelling of 121670250 in words is "one hundred twenty-one million, six hundred seventy thousand, two hundred fifty".