122212120111 has 4 divisors (see below), whose sum is σ = 122221528992. Its totient is φ = 122202711232.

The previous prime is 122212120039. The next prime is 122212120159. The reversal of 122212120111 is 111021212221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122212120111 - 2¹³ = 122212111919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212120211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4684930 + ... + 4710943.

It is an arithmetic number, because the mean of its divisors is an integer number (30555382248).

Almost surely, 2^122212120111 is an apocalyptic number.

122212120111 is a deficient number, since it is larger than the sum of its proper divisors (9408881).

122212120111 is an equidigital number, since it uses as much as digits as its factorization.

122212120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9408880.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122212120111 its reverse (111021212221), we get a palindrome (233233332332).

The spelling of 122212120111 in words is "one hundred twenty-two billion, two hundred twelve million, one hundred twenty thousand, one hundred eleven".