99221499 has 24 divisors (see below), whose sum is σ = 159672240. Its totient is φ = 58951872.

The previous prime is 99221489. The next prime is 99221509. The reversal of 99221499 is 99412299.

It is an interprime number because it is at equal distance from previous prime (99221489) and next prime (99221509).

It is not a de Polignac number, because 99221499 - 2⁵ = 99221467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99221429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11229 + ... + 18014.

It is an arithmetic number, because the mean of its divisors is an integer number (6653010).

Almost surely, 2^99221499 is an apocalyptic number.

99221499 is a deficient number, since it is larger than the sum of its proper divisors (60450741).

99221499 is a wasteful number, since it uses less digits than its factorization.

99221499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29291 (or 29288 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 99221499 is about 9960.9988956931. The cubic root of 99221499 is about 462.9512502571.

The spelling of 99221499 in words is "ninety-nine million, two hundred twenty-one thousand, four hundred ninety-nine".