99121222122 has 32 divisors (see below), whose sum is σ = 213742290048. Its totient is φ = 30463062336.

The previous prime is 99121222111. The next prime is 99121222127. The reversal of 99121222122 is 22122212199.

It is not an unprimeable number, because it can be changed into a prime (99121222127) 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, 678358 + ... + 811425.

It is an arithmetic number, because the mean of its divisors is an integer number (6679446564).

Almost surely, 2^99121222122 is an apocalyptic number.

99121222122 is an abundant number, since it is smaller than the sum of its proper divisors (114621067926).

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

99121222122 is a wasteful number, since it uses less digits than its factorization.

99121222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490654.

The product of its digits is 5184, while the sum is 33.

The spelling of 99121222122 in words is "ninety-nine billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".