91112102 has 4 divisors (see below), whose sum is σ = 136668156. Its totient is φ = 45556050.

The previous prime is 91112081. The next prime is 91112111. The reversal of 91112102 is 20121119.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22778024 + ... + 22778027.

It is an arithmetic number, because the mean of its divisors is an integer number (34167039).

Almost surely, 2^91112102 is an apocalyptic number.

91112102 is a deficient number, since it is larger than the sum of its proper divisors (45556054).

91112102 is a wasteful number, since it uses less digits than its factorization.

91112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45556053.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 91112102 is about 9545.2659470546. The cubic root of 91112102 is about 449.9787677225.

It can be divided in two parts, 9 and 1112102, that added together give a palindrome (1112111).

The spelling of 91112102 in words is "ninety-one million, one hundred twelve thousand, one hundred two".