91122102100111 has 4 divisors (see below), whose sum is σ = 91123755643800. Its totient is φ = 91120448556424.

The previous prime is 91122102100091. The next prime is 91122102100129. The reversal of 91122102100111 is 11100120122119.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 91122102100111 - 2⁹ = 91122102099599 is a prime.

It is a super-2 number, since 2×91122102100111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91122102400111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826689181 + ... + 826799398.

It is an arithmetic number, because the mean of its divisors is an integer number (22780938910950).

Almost surely, 2^{91122102100111} is an apocalyptic number.

91122102100111 is a deficient number, since it is larger than the sum of its proper divisors (1653543689).

91122102100111 is a wasteful number, since it uses less digits than its factorization.

91122102100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653543688.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 91122102100111 in words is "ninety-one trillion, one hundred twenty-two billion, one hundred two million, one hundred thousand, one hundred eleven".