99001012 has 24 divisors (see below), whose sum is σ = 195521760. Its totient is φ = 43448160.

The previous prime is 99000991. The next prime is 99001031. The reversal of 99001012 is 21010099.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37518 + ... + 40069.

It is an arithmetic number, because the mean of its divisors is an integer number (8146740).

Almost surely, 2^99001012 is an apocalyptic number.

It is an amenable number.

99001012 is a deficient number, since it is larger than the sum of its proper divisors (96520748).

99001012 is a wasteful number, since it uses less digits than its factorization.

99001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77631 (or 77629 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 99001012 is about 9949.9252258497. The cubic root of 99001012 is about 462.6080772017.

The spelling of 99001012 in words is "ninety-nine million, one thousand, twelve".