999910122 has 32 divisors (see below), whose sum is σ = 2022148800. Its totient is φ = 329601408.

The previous prime is 999910117. The next prime is 999910129. The reversal of 999910122 is 221019999.

It is not an unprimeable number, because it can be changed into a prime (999910129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222118 + ... + 226574.

It is an arithmetic number, because the mean of its divisors is an integer number (63192150).

Almost surely, 2^999910122 is an apocalyptic number.

999910122 is an abundant number, since it is smaller than the sum of its proper divisors (1022238678).

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

999910122 is a wasteful number, since it uses less digits than its factorization.

999910122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4870.

The product of its (nonzero) digits is 26244, while the sum is 42.

The square root of 999910122 is about 31621.3554737933. The cubic root of 999910122 is about 999.9700397691.

The spelling of 999910122 in words is "nine hundred ninety-nine million, nine hundred ten thousand, one hundred twenty-two".