221102330 has 16 divisors (see below), whose sum is σ = 399171240. Its totient is φ = 88177152.

The previous prime is 221102303. The next prime is 221102341. The reversal of 221102330 is 33201122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 195468361 + 25633969 = 13981^2 + 5063^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29435 + ... + 36174.

Almost surely, 2^221102330 is an apocalyptic number.

221102330 is a deficient number, since it is larger than the sum of its proper divisors (178068910).

221102330 is a wasteful number, since it uses less digits than its factorization.

221102330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65953.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 221102330 is about 14869.5100793537. The cubic root of 221102330 is about 604.6876606485.

Adding to 221102330 its reverse (33201122), we get a palindrome (254303452).

The spelling of 221102330 in words is "two hundred twenty-one million, one hundred two thousand, three hundred thirty".