99022122 has 64 divisors (see below), whose sum is σ = 229248000. Its totient is φ = 31648320.

The previous prime is 99022111. The next prime is 99022123. The reversal of 99022122 is 22122099.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (99022123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249228 + ... + 249624.

It is an arithmetic number, because the mean of its divisors is an integer number (3582000).

Almost surely, 2^99022122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99022122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114624000).

99022122 is an abundant number, since it is smaller than the sum of its proper divisors (130225878).

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

99022122 is a wasteful number, since it uses less digits than its factorization.

99022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 99022122 is about 9950.9859812985. The cubic root of 99022122 is about 462.6409555272.

The spelling of 99022122 in words is "ninety-nine million, twenty-two thousand, one hundred twenty-two".