999112122011 has 4 divisors (see below), whose sum is σ = 1010338101000. Its totient is φ = 987886143024.

The previous prime is 999112121983. The next prime is 999112122059. The reversal of 999112122011 is 110221211999.

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 999112122011 - 2³⁴ = 981932252827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999112142011) 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, 5612989361 + ... + 5612989538.

It is an arithmetic number, because the mean of its divisors is an integer number (252584525250).

Almost surely, 2^999112122011 is an apocalyptic number.

999112122011 is a deficient number, since it is larger than the sum of its proper divisors (11225978989).

999112122011 is a wasteful number, since it uses less digits than its factorization.

999112122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11225978988.

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 999112122011 in words is "nine hundred ninety-nine billion, one hundred twelve million, one hundred twenty-two thousand, eleven".