12022111121 has 4 divisors (see below), whose sum is σ = 12023526912. Its totient is φ = 12020695332.

The previous prime is 12022111039. The next prime is 12022111159. The reversal of 12022111121 is 12111122021.

12022111121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12022111121 - 2¹⁸ = 12021848977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12022111096 and 12022111105.

It is not an unprimeable number, because it can be changed into a prime (12022111921) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 695081 + ... + 712166.

It is an arithmetic number, because the mean of its divisors is an integer number (3005881728).

Almost surely, 2^12022111121 is an apocalyptic number.

It is an amenable number.

12022111121 is a deficient number, since it is larger than the sum of its proper divisors (1415791).

12022111121 is an equidigital number, since it uses as much as digits as its factorization.

12022111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415790.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12022111121 its reverse (12111122021), we get a palindrome (24133233142).

The spelling of 12022111121 in words is "twelve billion, twenty-two million, one hundred eleven thousand, one hundred twenty-one".