999120210222 has 16 divisors (see below), whose sum is σ = 2008594000080. Its totient is φ = 331314473472.

The previous prime is 999120210217. The next prime is 999120210223. The reversal of 999120210222 is 222012021999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999120210223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431397897 + ... + 431400212.

It is an arithmetic number, because the mean of its divisors is an integer number (125537125005).

Almost surely, 2^999120210222 is an apocalyptic number.

999120210222 is an abundant number, since it is smaller than the sum of its proper divisors (1009473789858).

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

999120210222 is a wasteful number, since it uses less digits than its factorization.

999120210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862798307.

The product of its (nonzero) digits is 23328, while the sum is 39.

The spelling of 999120210222 in words is "nine hundred ninety-nine billion, one hundred twenty million, two hundred ten thousand, two hundred twenty-two".