91122105 has 32 divisors (see below), whose sum is σ = 151061760. Its totient is φ = 46874880.

The previous prime is 91122103. The next prime is 91122107. The reversal of 91122105 is 50122119.

It is an interprime number because it is at equal distance from previous prime (91122103) and next prime (91122107).

It is not a de Polignac number, because 91122105 - 2¹ = 91122103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91122103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47556 + ... + 49434.

It is an arithmetic number, because the mean of its divisors is an integer number (4720680).

Almost surely, 2^91122105 is an apocalyptic number.

It is an amenable number.

91122105 is a deficient number, since it is larger than the sum of its proper divisors (59939655).

91122105 is a wasteful number, since it uses less digits than its factorization.

91122105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 91122105 is about 9545.7899096932. The cubic root of 91122105 is about 449.9952345174.

The spelling of 91122105 in words is "ninety-one million, one hundred twenty-two thousand, one hundred five".