122212221211211 has 2 divisors, whose sum is σ = 122212221211212. Its totient is φ = 122212221211210.

The previous prime is 122212221211177. The next prime is 122212221211219. The reversal of 122212221211211 is 112112122212221.

It is a strong prime.

It is an emirp because it is prime and its reverse (112112122212221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122212221211211 is a prime.

It is not a weakly prime, because it can be changed into another prime (122212221211219) 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, 61106110605605 + 61106110605606.

It is an arithmetic number, because the mean of its divisors is an integer number (61106110605606).

Almost surely, 2^{122212221211211} is an apocalyptic number.

122212221211211 is a deficient number, since it is larger than the sum of its proper divisors (1).

122212221211211 is an equidigital number, since it uses as much as digits as its factorization.

122212221211211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 256, while the sum is 23.

Adding to 122212221211211 its reverse (112112122212221), we get a palindrome (234324343423432).

The spelling of 122212221211211 in words is "one hundred twenty-two trillion, two hundred twelve billion, two hundred twenty-one million, two hundred eleven thousand, two hundred eleven".