122020111111 has 16 divisors (see below), whose sum is σ = 125292742848. Its totient is φ = 118761984000.

The previous prime is 122020111093. The next prime is 122020111121. The reversal of 122020111111 is 111111020221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122020111111 - 2¹⁵ = 122020078343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122020111091 and 122020111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122020111121) 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 in 15 ways as a sum of consecutive naturals, for example, 53681271 + ... + 53683543.

It is an arithmetic number, because the mean of its divisors is an integer number (7830796428).

Almost surely, 2^122020111111 is an apocalyptic number.

122020111111 is a deficient number, since it is larger than the sum of its proper divisors (3272631737).

122020111111 is a wasteful number, since it uses less digits than its factorization.

122020111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4842.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 122020111111 its reverse (111111020221), we get a palindrome (233131131332).

The spelling of 122020111111 in words is "one hundred twenty-two billion, twenty million, one hundred eleven thousand, one hundred eleven".