999122111202 has 16 divisors (see below), whose sum is σ = 1998264817152. Its totient is φ = 333037271280.

The previous prime is 999122111191. The next prime is 999122111237. The reversal of 999122111202 is 202111221999.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187074 + ... + 1425917.

It is an arithmetic number, because the mean of its divisors is an integer number (124891551072).

Almost surely, 2^999122111202 is an apocalyptic number.

999122111202 is an abundant number, since it is smaller than the sum of its proper divisors (999142705950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999122111202 is a wasteful number, since it uses less digits than its factorization.

999122111202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716233.

The product of its (nonzero) digits is 11664, while the sum is 39.

The spelling of 999122111202 in words is "nine hundred ninety-nine billion, one hundred twenty-two million, one hundred eleven thousand, two hundred two".