122221204111 has 2 divisors, whose sum is σ = 122221204112. Its totient is φ = 122221204110.

The previous prime is 122221204103. The next prime is 122221204129. The reversal of 122221204111 is 111402122221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122221204111 - 2³ = 122221204103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122221204141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110602055 + 61110602056.

It is an arithmetic number, because the mean of its divisors is an integer number (61110602056).

Almost surely, 2^122221204111 is an apocalyptic number.

122221204111 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221204111 is an equidigital number, since it uses as much as digits as its factorization.

122221204111 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 19.

Adding to 122221204111 its reverse (111402122221), we get a palindrome (233623326332).

The spelling of 122221204111 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred four thousand, one hundred eleven".