91111011020101 has 8 divisors (see below), whose sum is σ = 96212737387520. Its totient is φ = 86039925652512.

The previous prime is 91111011020089. The next prime is 91111011020119. The reversal of 91111011020101 is 10102011011119.

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 91111011020101 - 2³³ = 91102421085509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91111011020131) 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, 7660243845 + ... + 7660255738.

It is an arithmetic number, because the mean of its divisors is an integer number (12026592173440).

Almost surely, 2^{91111011020101} is an apocalyptic number.

It is an amenable number.

91111011020101 is a deficient number, since it is larger than the sum of its proper divisors (5101726367419).

91111011020101 is a wasteful number, since it uses less digits than its factorization.

91111011020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15320499915.

The product of its (nonzero) digits is 18, while the sum is 19.

The spelling of 91111011020101 in words is "ninety-one trillion, one hundred eleven billion, eleven million, twenty thousand, one hundred one".