99269221 has 2 divisors, whose sum is σ = 99269222. Its totient is φ = 99269220.

The previous prime is 99269207. The next prime is 99269227. The reversal of 99269221 is 12296299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97416900 + 1852321 = 9870^2 + 1361^2 .

It is an emirp because it is prime and its reverse (12296299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99269221 - 2⁵ = 99269189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99269227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49634610 + 49634611.

It is an arithmetic number, because the mean of its divisors is an integer number (49634611).

Almost surely, 2^99269221 is an apocalyptic number.

It is an amenable number.

99269221 is a deficient number, since it is larger than the sum of its proper divisors (1).

99269221 is an equidigital number, since it uses as much as digits as its factorization.

99269221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 40.

The square root of 99269221 is about 9963.3940502220. The cubic root of 99269221 is about 463.0254593709.

The spelling of 99269221 in words is "ninety-nine million, two hundred sixty-nine thousand, two hundred twenty-one".