122012122111 has 4 divisors (see below), whose sum is σ = 133104133224. Its totient is φ = 110920111000.

The previous prime is 122012122091. The next prime is 122012122139. The reversal of 122012122111 is 111221210221.

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 122012122111 - 2¹⁷ = 122011991039 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 (122012122411) 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, 5546005540 + ... + 5546005561.

It is an arithmetic number, because the mean of its divisors is an integer number (33276033306).

Almost surely, 2^122012122111 is an apocalyptic number.

122012122111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122012122111 is a deficient number, since it is larger than the sum of its proper divisors (11092011113).

122012122111 is a wasteful number, since it uses less digits than its factorization.

122012122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11092011112.

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

Adding to 122012122111 its reverse (111221210221), we get a palindrome (233233332332).

It can be divided in two parts, 12201 and 2122111, that added together give a palindrome (2134312).

The spelling of 122012122111 in words is "one hundred twenty-two billion, twelve million, one hundred twenty-two thousand, one hundred eleven".