121112999 has 8 divisors (see below), whose sum is σ = 140684448. Its totient is φ = 102108960.

The previous prime is 121112993. The next prime is 121113067. The reversal of 121112999 is 999211121.

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 121112999 - 2¹² = 121108903 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 (121112993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141392 + ... + 142245.

It is an arithmetic number, because the mean of its divisors is an integer number (17585556).

Almost surely, 2^121112999 is an apocalyptic number.

121112999 is a deficient number, since it is larger than the sum of its proper divisors (19571449).

121112999 is an equidigital number, since it uses as much as digits as its factorization.

121112999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283705.

The product of its digits is 2916, while the sum is 35.

The square root of 121112999 is about 11005.1351195703. The cubic root of 121112999 is about 494.7626641715.

The spelling of 121112999 in words is "one hundred twenty-one million, one hundred twelve thousand, nine hundred ninety-nine".