91220020000012 has 12 divisors (see below), whose sum is σ = 159663896914536. Its totient is φ = 45601763738720.

The previous prime is 91220019999991. The next prime is 91220020000027. The reversal of 91220020000012 is 21000002002219.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2061540433 + ... + 2061584680.

It is an arithmetic number, because the mean of its divisors is an integer number (13305324742878).

Almost surely, 2^{91220020000012} is an apocalyptic number.

It is an amenable number.

91220020000012 is a deficient number, since it is larger than the sum of its proper divisors (68443876914524).

91220020000012 is a wasteful number, since it uses less digits than its factorization.

91220020000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4123130648 (or 4123130646 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 91220020000012 in words is "ninety-one trillion, two hundred twenty billion, twenty million, twelve", and thus it is an aban number.