121365530 has 32 divisors (see below), whose sum is σ = 256652928. Its totient is φ = 40737600.

The previous prime is 121365511. The next prime is 121365557. The reversal of 121365530 is 35563121.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 121365530.

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, 41006 + ... + 43865.

It is an arithmetic number, because the mean of its divisors is an integer number (8020404).

Almost surely, 2^121365530 is an apocalyptic number.

121365530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121365530 is an abundant number, since it is smaller than the sum of its proper divisors (135287398).

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

121365530 is a wasteful number, since it uses less digits than its factorization.

121365530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84902.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 121365530 is about 11016.6024708165. The cubic root of 121365530 is about 495.1062996550.

The spelling of 121365530 in words is "one hundred twenty-one million, three hundred sixty-five thousand, five hundred thirty".