9091912012 has 12 divisors (see below), whose sum is σ = 15912388800. Its totient is φ = 4545515216.

The previous prime is 9091912009. The next prime is 9091912013. The reversal of 9091912012 is 2102191909.

9091912012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (9091912013) 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 3 ways as a sum of consecutive naturals, for example, 61387 + ... + 148162.

It is an arithmetic number, because the mean of its divisors is an integer number (1326032400).

Almost surely, 2^9091912012 is an apocalyptic number.

It is an amenable number.

9091912012 is a deficient number, since it is larger than the sum of its proper divisors (6820476788).

9091912012 is a wasteful number, since it uses less digits than its factorization.

9091912012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220400 (or 220398 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 9091912012 is about 95351.5181420831. The cubic root of 9091912012 is about 2087.1407688203.

The spelling of 9091912012 in words is "nine billion, ninety-one million, nine hundred twelve thousand, twelve".