221131130330 has 32 divisors (see below), whose sum is σ = 434241164160. Its totient is φ = 80407609920.

The previous prime is 221131130329. The next prime is 221131130371. The reversal of 221131130330 is 33031131122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3767972 + ... + 3826208.

It is an arithmetic number, because the mean of its divisors is an integer number (13570036380).

Almost surely, 2^221131130330 is an apocalyptic number.

221131130330 is a deficient number, since it is larger than the sum of its proper divisors (213110033830).

221131130330 is a wasteful number, since it uses less digits than its factorization.

221131130330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92774.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 221131130330 its reverse (33031131122), we get a palindrome (254162261452).

The spelling of 221131130330 in words is "two hundred twenty-one billion, one hundred thirty-one million, one hundred thirty thousand, three hundred thirty".