9091109212100 has 36 divisors (see below), whose sum is σ = 19729475073924. Its totient is φ = 3636117770880.

The previous prime is 9091109212099. The next prime is 9091109212103. The reversal of 9091109212100 is 12129011909.

It can be written as a sum of positive squares in 6 ways, for example, as 1342669117696 + 7748440094404 = 1158736^2 + 2783602^2 .

It is not an unprimeable number, because it can be changed into a prime (9091109212103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2951039 + ... + 5185638.

Almost surely, 2^{9091109212100} is an apocalyptic number.

It is an amenable number.

9091109212100 is an abundant number, since it is smaller than the sum of its proper divisors (10638365861824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9091109212100 is a wasteful number, since it uses less digits than its factorization.

9091109212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8147864 (or 8147857 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 9091109212100 in words is "nine trillion, ninety-one billion, one hundred nine million, two hundred twelve thousand, one hundred".