120211999 has 4 divisors (see below), whose sum is σ = 121275936. Its totient is φ = 119148064.

The previous prime is 120211979. The next prime is 120212023. The reversal of 120211999 is 999112021.

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 120211999 - 2¹³ = 120203807 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 (120211909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531799 + ... + 532024.

It is an arithmetic number, because the mean of its divisors is an integer number (30318984).

Almost surely, 2^120211999 is an apocalyptic number.

120211999 is a deficient number, since it is larger than the sum of its proper divisors (1063937).

120211999 is a wasteful number, since it uses less digits than its factorization.

120211999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063936.

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 120211999 is about 10964.1232663629. The cubic root of 120211999 is about 493.5327075913.

The spelling of 120211999 in words is "one hundred twenty million, two hundred eleven thousand, nine hundred ninety-nine".