222309999 has 12 divisors (see below), whose sum is σ = 321945000. Its totient is φ = 147823344.

The previous prime is 222309991. The next prime is 222310009. The reversal of 222309999 is 999903222.

222309999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222309999 - 2³ = 222309991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222309991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28249 + ... + 35250.

It is an arithmetic number, because the mean of its divisors is an integer number (26828750).

Almost surely, 2^222309999 is an apocalyptic number.

222309999 is a deficient number, since it is larger than the sum of its proper divisors (99635001).

222309999 is a wasteful number, since it uses less digits than its factorization.

222309999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63894 (or 63891 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 222309999 is about 14910.0636819566. The cubic root of 222309999 is about 605.7866042746.

The spelling of 222309999 in words is "two hundred twenty-two million, three hundred nine thousand, nine hundred ninety-nine".