99012 has 24 divisors (see below), whose sum is σ = 238336. Its totient is φ = 31968.

The previous prime is 98999. The next prime is 99013. The reversal of 99012 is 21099.

It is a happy number.

It is a super-2 number, since 2×99012² = 19606752288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99012.

It is not an unprimeable number, because it can be changed into a prime (99013) by changing a digit.

99012 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333 + ... + 555.

2⁹⁹⁰¹² is an apocalyptic number.

It is an amenable number.

99012 is an abundant number, since it is smaller than the sum of its proper divisors (139324).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119168).

99012 is a wasteful number, since it uses less digits than its factorization.

99012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 99012 is about 314.6617231250. The cubic root of 99012 is about 46.2625191335.

The spelling of 99012 in words is "ninety-nine thousand, twelve".