121199983 has 8 divisors (see below), whose sum is σ = 124819200. Its totient is φ = 117633048.

The previous prime is 121199971. The next prime is 121199989. The reversal of 121199983 is 389991121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121199983 - 2⁹ = 121199471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121199989) 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, 8341 + ... + 17662.

It is an arithmetic number, because the mean of its divisors is an integer number (15602400).

Almost surely, 2^121199983 is an apocalyptic number.

121199983 is a deficient number, since it is larger than the sum of its proper divisors (3619217).

121199983 is an equidigital number, since it uses as much as digits as its factorization.

121199983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26141.

The product of its digits is 34992, while the sum is 43.

The square root of 121199983 is about 11009.0863835288. The cubic root of 121199983 is about 494.8810828853.

The spelling of 121199983 in words is "one hundred twenty-one million, one hundred ninety-nine thousand, nine hundred eighty-three".