9999122222 has 16 divisors (see below), whose sum is σ = 15602576400. Its totient is φ = 4800190080.

The previous prime is 9999122171. The next prime is 9999122227. The reversal of 9999122222 is 2222219999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999122227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471179 + ... + 491942.

It is an arithmetic number, because the mean of its divisors is an integer number (975161025).

Almost surely, 2^9999122222 is an apocalyptic number.

9999122222 is a deficient number, since it is larger than the sum of its proper divisors (5603454178).

9999122222 is a wasteful number, since it uses less digits than its factorization.

9999122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963331.

The product of its digits is 209952, while the sum is 47.

The square root of 9999122222 is about 99995.6110136840. The cubic root of 9999122222 is about 2154.3716510083.

The spelling of 9999122222 in words is "nine billion, nine hundred ninety-nine million, one hundred twenty-two thousand, two hundred twenty-two".