121393320 has 64 divisors (see below), whose sum is σ = 371070720. Its totient is φ = 31759104.

The previous prime is 121393309. The next prime is 121393357. The reversal of 121393320 is 23393121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3184 + ... + 15903.

It is an arithmetic number, because the mean of its divisors is an integer number (5797980).

Almost surely, 2^121393320 is an apocalyptic number.

121393320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121393320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185535360).

121393320 is an abundant number, since it is smaller than the sum of its proper divisors (249677400).

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

121393320 is a wasteful number, since it uses less digits than its factorization.

121393320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19154 (or 19150 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 121393320 is about 11017.8636767751. The cubic root of 121393320 is about 495.1440862050.

The spelling of 121393320 in words is "one hundred twenty-one million, three hundred ninety-three thousand, three hundred twenty".