91110191201 has 8 divisors (see below), whose sum is σ = 93120862464. Its totient is φ = 89121257200.

The previous prime is 91110191143. The next prime is 91110191209. The reversal of 91110191201 is 10219101119.

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 91110191201 - 2¹⁴ = 91110174817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91110191209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5425841 + ... + 5442606.

It is an arithmetic number, because the mean of its divisors is an integer number (11640107808).

Almost surely, 2^91110191201 is an apocalyptic number.

It is an amenable number.

91110191201 is a deficient number, since it is larger than the sum of its proper divisors (2010671263).

91110191201 is a wasteful number, since it uses less digits than its factorization.

91110191201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10868631.

The product of its (nonzero) digits is 162, while the sum is 26.

The spelling of 91110191201 in words is "ninety-one billion, one hundred ten million, one hundred ninety-one thousand, two hundred one".