91112111111011 has 8 divisors (see below), whose sum is σ = 91130495882384. Its totient is φ = 91093727178720.

The previous prime is 91112111111009. The next prime is 91112111111041. The reversal of 91112111111011 is 11011111121119.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91112111111011 - 2¹ = 91112111111009 is a prime.

It is a super-2 number, since 2×91112111111011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91112111111041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245666965 + ... + 246037561.

It is an arithmetic number, because the mean of its divisors is an integer number (11391311985298).

Almost surely, 2^{91112111111011} is an apocalyptic number.

91112111111011 is a deficient number, since it is larger than the sum of its proper divisors (18384771373).

91112111111011 is a wasteful number, since it uses less digits than its factorization.

91112111111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419541.

The product of its (nonzero) digits is 18, while the sum is 22.

The spelling of 91112111111011 in words is "ninety-one trillion, one hundred twelve billion, one hundred eleven million, one hundred eleven thousand, eleven".