12022111212 has 24 divisors (see below), whose sum is σ = 28122262896. Its totient is φ = 3997274688.

The previous prime is 12022111177. The next prime is 12022111219. The reversal of 12022111212 is 21211122021.

It is a super-2 number, since 2×12022111212² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12022111191 and 12022111200.

It is not an unprimeable number, because it can be changed into a prime (12022111219) 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 7 ways as a sum of consecutive naturals, for example, 1257003 + ... + 1266530.

It is an arithmetic number, because the mean of its divisors is an integer number (1171760954).

Almost surely, 2^12022111212 is an apocalyptic number.

12022111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12022111212 is an abundant number, since it is smaller than the sum of its proper divisors (16100151684).

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

12022111212 is a wasteful number, since it uses less digits than its factorization.

12022111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523937 (or 2523935 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12022111212 its reverse (21211122021), we get a palindrome (33233233233).

The spelling of 12022111212 in words is "twelve billion, twenty-two million, one hundred eleven thousand, two hundred twelve".