999120102011 has 4 divisors (see below), whose sum is σ = 1002374565192. Its totient is φ = 995865638832.

The previous prime is 999120101999. The next prime is 999120102059. The reversal of 999120102011 is 110201021999.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999120102011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999120102091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1627231130 + ... + 1627231743.

It is an arithmetic number, because the mean of its divisors is an integer number (250593641298).

Almost surely, 2^999120102011 is an apocalyptic number.

999120102011 is a deficient number, since it is larger than the sum of its proper divisors (3254463181).

999120102011 is a wasteful number, since it uses less digits than its factorization.

999120102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254463180.

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

The spelling of 999120102011 in words is "nine hundred ninety-nine billion, one hundred twenty million, one hundred two thousand, eleven".