121383387 has 8 divisors (see below), whose sum is σ = 179827280. Its totient is φ = 80922240.

The previous prime is 121383373. The next prime is 121383391. The reversal of 121383387 is 783383121.

It is not a de Polignac number, because 121383387 - 2⁴ = 121383371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121383287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2247814 + ... + 2247867.

It is an arithmetic number, because the mean of its divisors is an integer number (22478410).

Almost surely, 2^121383387 is an apocalyptic number.

121383387 is a deficient number, since it is larger than the sum of its proper divisors (58443893).

121383387 is an equidigital number, since it uses as much as digits as its factorization.

121383387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4495690 (or 4495684 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 121383387 is about 11017.4128995876. The cubic root of 121383387 is about 495.1305807932.

The spelling of 121383387 in words is "one hundred twenty-one million, three hundred eighty-three thousand, three hundred eighty-seven".