9912222122 has 16 divisors (see below), whose sum is σ = 16222660992. Its totient is φ = 4504816320.

The previous prime is 9912222109. The next prime is 9912222139. The reversal of 9912222122 is 2212222199.

It is a happy number.

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, 113858 + ... + 181074.

It is an arithmetic number, because the mean of its divisors is an integer number (1013916312).

Almost surely, 2^9912222122 is an apocalyptic number.

9912222122 is a deficient number, since it is larger than the sum of its proper divisors (6310438870).

9912222122 is a wasteful number, since it uses less digits than its factorization.

9912222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73933.

The product of its digits is 5184, while the sum is 32.

The square root of 9912222122 is about 99560.1432401541. The cubic root of 9912222122 is about 2148.1124317960.

It can be divided in two parts, 99 and 12222122, that added together give a palindrome (12222221).

The spelling of 9912222122 in words is "nine billion, nine hundred twelve million, two hundred twenty-two thousand, one hundred twenty-two".