99012223212 has 96 divisors (see below), whose sum is σ = 265520166912. Its totient is φ = 28130159616.

The previous prime is 99012223201. The next prime is 99012223231. The reversal of 99012223212 is 21232221099.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16770253 + ... + 16776155.

It is an arithmetic number, because the mean of its divisors is an integer number (2765835072).

Almost surely, 2^99012223212 is an apocalyptic number.

It is an amenable number.

99012223212 is an abundant number, since it is smaller than the sum of its proper divisors (166507943700).

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

99012223212 is a wasteful number, since it uses less digits than its factorization.

99012223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7007 (or 7005 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 99012223212 in words is "ninety-nine billion, twelve million, two hundred twenty-three thousand, two hundred twelve".