91202210101 has 8 divisors (see below), whose sum is σ = 92928691800. Its totient is φ = 89475939072.

The previous prime is 91202210093. The next prime is 91202210159. The reversal of 91202210101 is 10101220219.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21374147601 + 69828062500 = 146199^2 + 264250^2 .

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 91202210101 - 2³ = 91202210093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91202210401) 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, 1029825 + ... + 1114873.

It is an arithmetic number, because the mean of its divisors is an integer number (11616086475).

Almost surely, 2^91202210101 is an apocalyptic number.

It is an amenable number.

91202210101 is a deficient number, since it is larger than the sum of its proper divisors (1726481699).

91202210101 is a wasteful number, since it uses less digits than its factorization.

91202210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105335.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 91202210101 in words is "ninety-one billion, two hundred two million, two hundred ten thousand, one hundred one".