91102220111201 has 8 divisors (see below), whose sum is σ = 98110457004840. Its totient is φ = 84094036618752.

The previous prime is 91102220111183. The next prime is 91102220111249. The reversal of 91102220111201 is 10211102220119.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 561742755025 + 90540477356176 = 749495^2 + 9515276^2 .

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 91102220111201 - 2¹⁰ = 91102220110177 is a prime.

It is a super-2 number, since 2×91102220111201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91102220111701) 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, 9771536 + ... + 16663953.

It is an arithmetic number, because the mean of its divisors is an integer number (12263807125605).

Almost surely, 2^{91102220111201} is an apocalyptic number.

It is an amenable number.

91102220111201 is a deficient number, since it is larger than the sum of its proper divisors (7008236893639).

91102220111201 is a wasteful number, since it uses less digits than its factorization.

91102220111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26700595.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 91102220111201 in words is "ninety-one trillion, one hundred two billion, two hundred twenty million, one hundred eleven thousand, two hundred one".