99212 has 12 divisors (see below), whose sum is σ = 183960. Its totient is φ = 46656.

The previous prime is 99191. The next prime is 99223. The reversal of 99212 is 21299.

It is a zygodrome in base 2 and base 5.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662 + ... + 797.

It is an arithmetic number, because the mean of its divisors is an integer number (15330).

2⁹⁹²¹² is an apocalyptic number.

It is an amenable number.

99212 is a deficient number, since it is larger than the sum of its proper divisors (84748).

99212 is a wasteful number, since it uses less digits than its factorization.

99212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480 (or 1478 counting only the distinct ones).

The product of its digits is 324, while the sum is 23.

The square root of 99212 is about 314.9793644034. The cubic root of 99212 is about 46.2936476193.

Adding to 99212 its sum of digits (23), we get a triangular number (99235 = T₄₄₅).

The spelling of 99212 in words is "ninety-nine thousand, two hundred twelve".