223221312211 has 2 divisors, whose sum is σ = 223221312212. Its totient is φ = 223221312210.

The previous prime is 223221312161. The next prime is 223221312233. The reversal of 223221312211 is 112213122322.

It is an a-pointer prime, because the next prime (223221312233) can be obtained adding 223221312211 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223221312211 - 2⁹ = 223221311699 is a prime.

It is a super-3 number, since 3×223221312211³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223221312271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111610656105 + 111610656106.

It is an arithmetic number, because the mean of its divisors is an integer number (111610656106).

Almost surely, 2^223221312211 is an apocalyptic number.

223221312211 is a deficient number, since it is larger than the sum of its proper divisors (1).

223221312211 is an equidigital number, since it uses as much as digits as its factorization.

223221312211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

Adding to 223221312211 its reverse (112213122322), we get a palindrome (335434434533).

The spelling of 223221312211 in words is "two hundred twenty-three billion, two hundred twenty-one million, three hundred twelve thousand, two hundred eleven".