221130332 has 12 divisors (see below), whose sum is σ = 387609600. Its totient is φ = 110384736.

The previous prime is 221130319. The next prime is 221130337. The reversal of 221130332 is 233031122.

It is a self number, because there is not a number n which added to its sum of digits gives 221130332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221130337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42332 + ... + 47267.

It is an arithmetic number, because the mean of its divisors is an integer number (32300800).

Almost surely, 2^221130332 is an apocalyptic number.

It is an amenable number.

221130332 is a deficient number, since it is larger than the sum of its proper divisors (166479268).

221130332 is a wasteful number, since it uses less digits than its factorization.

221130332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90220 (or 90218 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 221130332 is about 14870.4516407539. The cubic root of 221130332 is about 604.7131869121.

Adding to 221130332 its reverse (233031122), we get a palindrome (454161454).

The spelling of 221130332 in words is "two hundred twenty-one million, one hundred thirty thousand, three hundred thirty-two".