121319870 has 16 divisors (see below), whose sum is σ = 249572448. Its totient is φ = 41595360.

The previous prime is 121319857. The next prime is 121319897. The reversal of 121319870 is 78913121.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 866501 + ... + 866640.

It is an arithmetic number, because the mean of its divisors is an integer number (15598278).

Almost surely, 2^121319870 is an apocalyptic number.

121319870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121319870 is an abundant number, since it is smaller than the sum of its proper divisors (128252578).

121319870 is a wasteful number, since it uses less digits than its factorization.

121319870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733155.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 121319870 is about 11014.5299491172. The cubic root of 121319870 is about 495.0442024262.

The spelling of 121319870 in words is "one hundred twenty-one million, three hundred nineteen thousand, eight hundred seventy".