9091919222 has 16 divisors (see below), whose sum is σ = 13786426752. Its totient is φ = 4496497920.

The previous prime is 9091919191. The next prime is 9091919231. The reversal of 9091919222 is 2229191909.

It is a happy number.

It is a congruent 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, 348443 + ... + 373625.

It is an arithmetic number, because the mean of its divisors is an integer number (861651672).

Almost surely, 2^9091919222 is an apocalyptic number.

9091919222 is a deficient number, since it is larger than the sum of its proper divisors (4694507530).

9091919222 is a wasteful number, since it uses less digits than its factorization.

9091919222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27143.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 9091919222 is about 95351.5559495491. Note that the first 3 decimals coincide. The cubic root of 9091919222 is about 2087.1413205298.

The spelling of 9091919222 in words is "nine billion, ninety-one million, nine hundred nineteen thousand, two hundred twenty-two".