121113859 has 4 divisors (see below), whose sum is σ = 122819760. Its totient is φ = 119407960.

The previous prime is 121113857. The next prime is 121113901. The reversal of 121113859 is 958311121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121113859 - 2¹ = 121113857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121113859.

It is not an unprimeable number, because it can be changed into a prime (121113857) 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 3 ways as a sum of consecutive naturals, for example, 852844 + ... + 852985.

It is an arithmetic number, because the mean of its divisors is an integer number (30704940).

Almost surely, 2^121113859 is an apocalyptic number.

121113859 is a deficient number, since it is larger than the sum of its proper divisors (1705901).

121113859 is an equidigital number, since it uses as much as digits as its factorization.

121113859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705900.

The product of its digits is 2160, while the sum is 31.

The square root of 121113859 is about 11005.1741921698. The cubic root of 121113859 is about 494.7638352401.

The spelling of 121113859 in words is "one hundred twenty-one million, one hundred thirteen thousand, eight hundred fifty-nine".