222509066 has 8 divisors (see below), whose sum is σ = 359437764. Its totient is φ = 102696480.

The previous prime is 222509051. The next prime is 222509069. The reversal of 222509066 is 660905222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 203889841 + 18619225 = 14279^2 + 4315^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (222509069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4278995 + ... + 4279046.

Almost surely, 2^222509066 is an apocalyptic number.

222509066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

222509066 is a deficient number, since it is larger than the sum of its proper divisors (136928698).

222509066 is a wasteful number, since it uses less digits than its factorization.

222509066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8558056.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 222509066 is about 14916.7377800912. The cubic root of 222509066 is about 605.9673670919.

The spelling of 222509066 in words is "two hundred twenty-two million, five hundred nine thousand, sixty-six".