99966222 has 24 divisors (see below), whose sum is σ = 229334976. Its totient is φ = 31361856.

The previous prime is 99966203. The next prime is 99966233. The reversal of 99966222 is 22266999.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163038 + ... + 163649.

It is an arithmetic number, because the mean of its divisors is an integer number (9555624).

Almost surely, 2^99966222 is an apocalyptic number.

99966222 is an abundant number, since it is smaller than the sum of its proper divisors (129368754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99966222 is a wasteful number, since it uses less digits than its factorization.

99966222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326712 (or 326709 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 99966222 is about 9998.3109573567. The cubic root of 99966222 is about 464.1066162800.

The spelling of 99966222 in words is "ninety-nine million, nine hundred sixty-six thousand, two hundred twenty-two".