12012111022 has 24 divisors (see below), whose sum is σ = 19151458200. Its totient is φ = 5649494400.

The previous prime is 12012111019. The next prime is 12012111047. The reversal of 12012111022 is 22011121021.

It is a super-2 number, since 2×12012111022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12012110993 and 12012111011.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1208272 + ... + 1218172.

It is an arithmetic number, because the mean of its divisors is an integer number (797977425).

Almost surely, 2^12012111022 is an apocalyptic number.

12012111022 is a deficient number, since it is larger than the sum of its proper divisors (7139347178).

12012111022 is a wasteful number, since it uses less digits than its factorization.

12012111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12036 (or 12019 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12012111022 its reverse (22011121021), we get a palindrome (34023232043).

Subtracting 12012111022 from its reverse (22011121021), we obtain a palindrome (9999009999).

The spelling of 12012111022 in words is "twelve billion, twelve million, one hundred eleven thousand, twenty-two".