91000201220012 has 48 divisors (see below), whose sum is σ = 183365474859840. Its totient is φ = 38708417376000.

The previous prime is 91000201220011. The next prime is 91000201220039. The reversal of 91000201220012 is 21002210200019.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (91000201220011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15058739 + ... + 20217962.

It is an arithmetic number, because the mean of its divisors is an integer number (3820114059580).

Almost surely, 2^{91000201220012} is an apocalyptic number.

It is an amenable number.

91000201220012 is an abundant number, since it is smaller than the sum of its proper divisors (92365273639828).

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

91000201220012 is a wasteful number, since it uses less digits than its factorization.

91000201220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35277402 (or 35277400 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 91000201220012 in words is "ninety-one trillion, two hundred one million, two hundred twenty thousand, twelve".