9912222 has 12 divisors (see below), whose sum is σ = 21476520. Its totient is φ = 3304068.

The previous prime is 9912211. The next prime is 9912251. The reversal of 9912222 is 2222199.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275322 + ... + 275357.

It is an arithmetic number, because the mean of its divisors is an integer number (1789710).

Almost surely, 2^9912222 is an apocalyptic number.

9912222 is an abundant number, since it is smaller than the sum of its proper divisors (11564298).

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

9912222 is a wasteful number, since it uses less digits than its factorization.

9912222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550687 (or 550684 counting only the distinct ones).

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

The square root of 9912222 is about 3148.3681487399. The cubic root of 9912222 is about 214.8112422983.

It can be divided in two parts, 99 and 12222, that added together give a palindrome (12321).

The spelling of 9912222 in words is "nine million, nine hundred twelve thousand, two hundred twenty-two".