122012121112 has 24 divisors (see below), whose sum is σ = 266123377260. Its totient is φ = 52290908880.

The previous prime is 122012121053. The next prime is 122012121151. The reversal of 122012121112 is 211121210221.

It is a super-2 number, since 2×122012121112² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 155627314 + ... + 155628097.

Almost surely, 2^122012121112 is an apocalyptic number.

It is an amenable number.

122012121112 is an abundant number, since it is smaller than the sum of its proper divisors (144111256148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122012121112 is a wasteful number, since it uses less digits than its factorization.

122012121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311255431 (or 311255420 counting only the distinct ones).

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

Adding to 122012121112 its reverse (211121210221), we get a palindrome (333133331333).

The spelling of 122012121112 in words is "one hundred twenty-two billion, twelve million, one hundred twenty-one thousand, one hundred twelve".