122222222011 has 2 divisors, whose sum is σ = 122222222012. Its totient is φ = 122222222010.

The previous prime is 122222221987. The next prime is 122222222047. The reversal of 122222222011 is 110222222221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122222222011 - 2⁷ = 122222221883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122222222011.

It is not a weakly prime, because it can be changed into another prime (122222222071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61111111005 + 61111111006.

It is an arithmetic number, because the mean of its divisors is an integer number (61111111006).

Almost surely, 2^122222222011 is an apocalyptic number.

122222222011 is a deficient number, since it is larger than the sum of its proper divisors (1).

122222222011 is an equidigital number, since it uses as much as digits as its factorization.

122222222011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 122222222011 its reverse (110222222221), we get a palindrome (232444444232).

The spelling of 122222222011 in words is "one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, eleven".