12222122012 has 24 divisors (see below), whose sum is σ = 21441744576.
Its totient is φ = 6095930048.
The previous prime is 12222121999. The next prime is 12222122021. The reversal of 12222122012 is 21022122221.
Adding to 12222122012 its reverse (21022122221), we get a palindrome (33244244233).
It is a happy number.
12222122012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
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 7 ways as a sum of consecutive naturals, for example, 4041533 + ... + 4044555.
It is an arithmetic number, because the mean of its divisors is an integer number (893406024).
Almost surely, 212222122012 is an apocalyptic number.
It is an amenable number.
12222122012 is a deficient number, since it is larger than the sum of its proper divisors (9219622564).
12222122012 is a wasteful number, since it uses less digits than its factorization.
12222122012 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5197 (or 5195 counting only the distinct ones).
The product of its (nonzero) digits is 128, while the sum is 17.
The spelling of 12222122012 in words is "twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, twelve".