99212997 has 32 divisors (see below), whose sum is σ = 148115968. Its totient is φ = 58677696.

The previous prime is 99212941. The next prime is 99213011. The reversal of 99212997 is 79921299.

It is not a de Polignac number, because 99212997 - 2¹⁴ = 99196613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99213997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111918 + ... + 112800.

It is an arithmetic number, because the mean of its divisors is an integer number (4628624).

Almost surely, 2^99212997 is an apocalyptic number.

It is an amenable number.

99212997 is a deficient number, since it is larger than the sum of its proper divisors (48902971).

99212997 is a wasteful number, since it uses less digits than its factorization.

99212997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009.

The product of its digits is 183708, while the sum is 48.

The square root of 99212997 is about 9960.5721221223. The cubic root of 99212997 is about 462.9380269000.

The spelling of 99212997 in words is "ninety-nine million, two hundred twelve thousand, nine hundred ninety-seven".