122020331111 has 24 divisors (see below), whose sum is σ = 143319108240. Its totient is φ = 103575169152.

The previous prime is 122020331099. The next prime is 122020331159. The reversal of 122020331111 is 111133020221.

It is not a de Polignac number, because 122020331111 - 2²⁶ = 121953222247 is a prime.

It is a super-2 number, since 2×122020331111² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122020331111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122020331011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12776240 + ... + 12785786.

It is an arithmetic number, because the mean of its divisors is an integer number (5971629510).

Almost surely, 2^122020331111 is an apocalyptic number.

122020331111 is a deficient number, since it is larger than the sum of its proper divisors (21298777129).

122020331111 is a wasteful number, since it uses less digits than its factorization.

122020331111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12063 (or 12056 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 122020331111 its reverse (111133020221), we get a palindrome (233153351332).

The spelling of 122020331111 in words is "one hundred twenty-two billion, twenty million, three hundred thirty-one thousand, one hundred eleven".