122222222221211 has 12 divisors (see below), whose sum is σ = 142178456337840. Its totient is φ = 104760736431120.

The previous prime is 122222222221201. The next prime is 122222222221219. The reversal of 122222222221211 is 112122222222221.

It is a de Polignac number, because none of the positive numbers 2^k-122222222221211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122222222221219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9455720 + ... + 18271701.

It is an arithmetic number, because the mean of its divisors is an integer number (11848204694820).

Almost surely, 2^{122222222221211} is an apocalyptic number.

122222222221211 is a deficient number, since it is larger than the sum of its proper divisors (19956234116629).

122222222221211 is an equidigital number, since it uses as much as digits as its factorization.

122222222221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27817394 (or 27817387 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

Adding to 122222222221211 its reverse (112122222222221), we get a palindrome (234344444443432).

The spelling of 122222222221211 in words is "one hundred twenty-two trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred eleven".