220033231221 has 8 divisors (see below), whose sum is σ = 306133191360. Its totient is φ = 140311045952.

The previous prime is 220033231213. The next prime is 220033231241. The reversal of 220033231221 is 122132330022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 220033231221 - 2³ = 220033231213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220033231241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1594443636 + ... + 1594443773.

It is an arithmetic number, because the mean of its divisors is an integer number (38266648920).

Almost surely, 2^220033231221 is an apocalyptic number.

It is an amenable number.

220033231221 is a deficient number, since it is larger than the sum of its proper divisors (86099960139).

220033231221 is a wasteful number, since it uses less digits than its factorization.

220033231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3188887435.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 220033231221 its reverse (122132330022), we get a palindrome (342165561243).

The spelling of 220033231221 in words is "two hundred twenty billion, thirty-three million, two hundred thirty-one thousand, two hundred twenty-one".