220221112211 has 2 divisors, whose sum is σ = 220221112212. Its totient is φ = 220221112210.

The previous prime is 220221112171. The next prime is 220221112217. The reversal of 220221112211 is 112211122022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220221112211 - 2⁶ = 220221112147 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220221112211.

It is not a weakly prime, because it can be changed into another prime (220221112217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110556105 + 110110556106.

It is an arithmetic number, because the mean of its divisors is an integer number (110110556106).

Almost surely, 2^220221112211 is an apocalyptic number.

220221112211 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221112211 is an equidigital number, since it uses as much as digits as its factorization.

220221112211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220221112211 its reverse (112211122022), we get a palindrome (332432234233).

The spelling of 220221112211 in words is "two hundred twenty billion, two hundred twenty-one million, one hundred twelve thousand, two hundred eleven".