220132221 has 8 divisors (see below), whose sum is σ = 293826624. Its totient is φ = 146596320.

The previous prime is 220132217. The next prime is 220132229. The reversal of 220132221 is 122231022.

It is a happy number.

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

It is not a de Polignac number, because 220132221 - 2² = 220132217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220132221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220132229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36345 + ... + 41966.

It is an arithmetic number, because the mean of its divisors is an integer number (36728328).

Almost surely, 2^220132221 is an apocalyptic number.

It is an amenable number.

220132221 is a deficient number, since it is larger than the sum of its proper divisors (73694403).

220132221 is an equidigital number, since it uses as much as digits as its factorization.

220132221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79251.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 220132221 is about 14836.8534736985. The cubic root of 220132221 is about 603.8019878161.

Adding to 220132221 its reverse (122231022), we get a palindrome (342363243).

The spelling of 220132221 in words is "two hundred twenty million, one hundred thirty-two thousand, two hundred twenty-one".