221112022211 has 2 divisors, whose sum is σ = 221112022212. Its totient is φ = 221112022210.

The previous prime is 221112022177. The next prime is 221112022213. The reversal of 221112022211 is 112220211122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221112022211 - 2¹⁰ = 221112021187 is a prime.

Together with 221112022213, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221112022211.

It is not a weakly prime, because it can be changed into another prime (221112022213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110556011105 + 110556011106.

It is an arithmetic number, because the mean of its divisors is an integer number (110556011106).

Almost surely, 2^221112022211 is an apocalyptic number.

221112022211 is a deficient number, since it is larger than the sum of its proper divisors (1).

221112022211 is an equidigital number, since it uses as much as digits as its factorization.

221112022211 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 221112022211 its reverse (112220211122), we get a palindrome (333332233333).

The spelling of 221112022211 in words is "two hundred twenty-one billion, one hundred twelve million, twenty-two thousand, two hundred eleven".