91210100122012 has 12 divisors (see below), whose sum is σ = 166557574136016. Its totient is φ = 43622221797440.

The previous prime is 91210100121991. The next prime is 91210100122019. The reversal of 91210100122012 is 21022100101219.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91210100122019) 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, 495707065789 + ... + 495707065972.

It is an arithmetic number, because the mean of its divisors is an integer number (13879797844668).

Almost surely, 2^{91210100122012} is an apocalyptic number.

91210100122012 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

91210100122012 is a deficient number, since it is larger than the sum of its proper divisors (75347474014004).

91210100122012 is a wasteful number, since it uses less digits than its factorization.

91210100122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991414131788 (or 991414131786 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 91210100122012 in words is "ninety-one trillion, two hundred ten billion, one hundred million, one hundred twenty-two thousand, twelve".