99100212 has 12 divisors (see below), whose sum is σ = 231233856. Its totient is φ = 33033400.

The previous prime is 99100187. The next prime is 99100217. The reversal of 99100212 is 21200199.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99100217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4129164 + ... + 4129187.

It is an arithmetic number, because the mean of its divisors is an integer number (19269488).

Almost surely, 2^99100212 is an apocalyptic number.

It is an amenable number.

99100212 is an abundant number, since it is smaller than the sum of its proper divisors (132133644).

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

99100212 is a wasteful number, since it uses less digits than its factorization.

99100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8258358 (or 8258356 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 99100212 is about 9954.9089398146. The cubic root of 99100212 is about 462.7625382562.

The spelling of 99100212 in words is "ninety-nine million, one hundred thousand, two hundred twelve".