91010011201 has 4 divisors (see below), whose sum is σ = 91568354992. Its totient is φ = 90451667412.

The previous prime is 91010011193. The next prime is 91010011223. The reversal of 91010011201 is 10211001019.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91010011201 - 2³ = 91010011193 is a prime.

It is a super-2 number, since 2×91010011201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91010011231) 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, 279171651 + ... + 279171976.

It is an arithmetic number, because the mean of its divisors is an integer number (22892088748).

Almost surely, 2^91010011201 is an apocalyptic number.

It is an amenable number.

91010011201 is a deficient number, since it is larger than the sum of its proper divisors (558343791).

91010011201 is a wasteful number, since it uses less digits than its factorization.

91010011201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558343790.

The product of its (nonzero) digits is 18, while the sum is 16.

The spelling of 91010011201 in words is "ninety-one billion, ten million, eleven thousand, two hundred one".