990020222122 has 16 divisors (see below), whose sum is σ = 1495146483072. Its totient is φ = 491642148960.

The previous prime is 990020222077. The next prime is 990020222159. The reversal of 990020222122 is 221222020099.

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, 536379 + ... + 1505902.

It is an arithmetic number, because the mean of its divisors is an integer number (93446655192).

Almost surely, 2^990020222122 is an apocalyptic number.

990020222122 is a deficient number, since it is larger than the sum of its proper divisors (505126260950).

990020222122 is a wasteful number, since it uses less digits than its factorization.

990020222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043933.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 990020222122 in words is "nine hundred ninety billion, twenty million, two hundred twenty-two thousand, one hundred twenty-two".