91220100101 has 8 divisors (see below), whose sum is σ = 98648067840. Its totient is φ = 83850851952.

The previous prime is 91220100067. The next prime is 91220100173. The reversal of 91220100101 is 10100102219.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91220100101 is a prime.

It is a super-2 number, since 2×91220100101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91220100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91220100401) 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, 14676665 + ... + 14682878.

It is an arithmetic number, because the mean of its divisors is an integer number (12331008480).

Almost surely, 2^91220100101 is an apocalyptic number.

It is an amenable number.

91220100101 is a deficient number, since it is larger than the sum of its proper divisors (7427967739).

91220100101 is a wasteful number, since it uses less digits than its factorization.

91220100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29359795.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 91220100101 in words is "ninety-one billion, two hundred twenty million, one hundred thousand, one hundred one".