91223130222 has 96 divisors (see below), whose sum is σ = 233470391232. Its totient is φ = 25197599232.

The previous prime is 91223130217. The next prime is 91223130247. The reversal of 91223130222 is 22203132219.

91223130222 is a `hidden beast` number, since 9 + 122 + 313 + 0 + 222 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 669618 + ... + 794250.

It is an arithmetic number, because the mean of its divisors is an integer number (2431983242).

Almost surely, 2^91223130222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91223130222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116735195616).

91223130222 is an abundant number, since it is smaller than the sum of its proper divisors (142247261010).

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

91223130222 is a wasteful number, since it uses less digits than its factorization.

91223130222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124842 (or 124839 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

It can be divided in two parts, 91223 and 130222, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 91223130222 in words is "ninety-one billion, two hundred twenty-three million, one hundred thirty thousand, two hundred twenty-two".