91002112220011 has 4 divisors (see below), whose sum is σ = 91002169289512. Its totient is φ = 91002055150512.

The previous prime is 91002112219987. The next prime is 91002112220027. The reversal of 91002112220011 is 11002221120019.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91002112220011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91002112320011) 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, 26072025 + ... + 29355658.

It is an arithmetic number, because the mean of its divisors is an integer number (22750542322378).

Almost surely, 2^{91002112220011} is an apocalyptic number.

91002112220011 is a deficient number, since it is larger than the sum of its proper divisors (57069501).

91002112220011 is a wasteful number, since it uses less digits than its factorization.

91002112220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57069500.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 91002112220011 in words is "ninety-one trillion, two billion, one hundred twelve million, two hundred twenty thousand, eleven".