220230111221 has 4 divisors (see below), whose sum is σ = 229805333472. Its totient is φ = 210654888972.

The previous prime is 220230111217. The next prime is 220230111239. The reversal of 220230111221 is 122111032022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220230111221 - 2² = 220230111217 is a prime.

It is a super-2 number, since 2×220230111221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220230111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220230111421) 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, 4787611091 + ... + 4787611136.

It is an arithmetic number, because the mean of its divisors is an integer number (57451333368).

Almost surely, 2^220230111221 is an apocalyptic number.

It is an amenable number.

220230111221 is a deficient number, since it is larger than the sum of its proper divisors (9575222251).

220230111221 is an equidigital number, since it uses as much as digits as its factorization.

220230111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9575222250.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 220230111221 its reverse (122111032022), we get a palindrome (342341143243).

The spelling of 220230111221 in words is "two hundred twenty billion, two hundred thirty million, one hundred eleven thousand, two hundred twenty-one".