122222112011 has 4 divisors (see below), whose sum is σ = 123896387592. Its totient is φ = 120547836432.

The previous prime is 122222112007. The next prime is 122222112049. The reversal of 122222112011 is 110211222221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110211222221 = 39163 ⋅2814167.

It is a cyclic number.

It is not a de Polignac number, because 122222112011 - 2² = 122222112007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122222102011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837137681 + ... + 837137826.

It is an arithmetic number, because the mean of its divisors is an integer number (30974096898).

Almost surely, 2^122222112011 is an apocalyptic number.

122222112011 is a deficient number, since it is larger than the sum of its proper divisors (1674275581).

122222112011 is an equidigital number, since it uses as much as digits as its factorization.

122222112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674275580.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122222112011 its reverse (110211222221), we get a palindrome (232433334232).

The spelling of 122222112011 in words is "one hundred twenty-two billion, two hundred twenty-two million, one hundred twelve thousand, eleven".