220221111102211 has 4 divisors (see below), whose sum is σ = 220221424106424. Its totient is φ = 220220798098000.

The previous prime is 220221111102203. The next prime is 220221111102227. The reversal of 220221111102211 is 112201111122022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220221111102211 - 2³ = 220221111102203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220221111102911) 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, 155444365 + ... + 156854686.

It is an arithmetic number, because the mean of its divisors is an integer number (55055356026606).

Almost surely, 2^{220221111102211} is an apocalyptic number.

220221111102211 is a deficient number, since it is larger than the sum of its proper divisors (313004213).

220221111102211 is an equidigital number, since it uses as much as digits as its factorization.

220221111102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313004212.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 220221111102211 its reverse (112201111122022), we get a palindrome (332422222224233).

The spelling of 220221111102211 in words is "two hundred twenty trillion, two hundred twenty-one billion, one hundred eleven million, one hundred two thousand, two hundred eleven".