91022113412 has 12 divisors (see below), whose sum is σ = 167672314320. Its totient is φ = 43115737896.

The previous prime is 91022113411. The next prime is 91022113421. The reversal of 91022113412 is 21431122019.

It is not an unprimeable number, because it can be changed into a prime (91022113411) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 598829618 + ... + 598829769.

It is an arithmetic number, because the mean of its divisors is an integer number (13972692860).

Almost surely, 2^91022113412 is an apocalyptic number.

It is an amenable number.

91022113412 is a deficient number, since it is larger than the sum of its proper divisors (76650200908).

91022113412 is a wasteful number, since it uses less digits than its factorization.

91022113412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197659410 (or 1197659408 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 91022113412 in words is "ninety-one billion, twenty-two million, one hundred thirteen thousand, four hundred twelve".