121223580 has 24 divisors (see below), whose sum is σ = 339426192. Its totient is φ = 32326272.

The previous prime is 121223551. The next prime is 121223611. The reversal of 121223580 is 85322121.

It is a self number, because there is not a number n which added to its sum of digits gives 121223580.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010137 + ... + 1010256.

It is an arithmetic number, because the mean of its divisors is an integer number (14142758).

Almost surely, 2^121223580 is an apocalyptic number.

121223580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121223580 is an abundant number, since it is smaller than the sum of its proper divisors (218202612).

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

121223580 is a wasteful number, since it uses less digits than its factorization.

121223580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020405 (or 2020403 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 121223580 is about 11010.1580370129. The cubic root of 121223580 is about 494.9131977169.

The spelling of 121223580 in words is "one hundred twenty-one million, two hundred twenty-three thousand, five hundred eighty".