221222022011 has 2 divisors, whose sum is σ = 221222022012. Its totient is φ = 221222022010.

The previous prime is 221222021981. The next prime is 221222022019. The reversal of 221222022011 is 110220222122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221222022011 is a prime.

It is not a weakly prime, because it can be changed into another prime (221222022019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110611011005 + 110611011006.

It is an arithmetic number, because the mean of its divisors is an integer number (110611011006).

Almost surely, 2^221222022011 is an apocalyptic number.

221222022011 is a deficient number, since it is larger than the sum of its proper divisors (1).

221222022011 is an equidigital number, since it uses as much as digits as its factorization.

221222022011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221222022011 its reverse (110220222122), we get a palindrome (331442244133).

The spelling of 221222022011 in words is "two hundred twenty-one billion, two hundred twenty-two million, twenty-two thousand, eleven".