12012212122 has 16 divisors (see below), whose sum is σ = 18299064960. Its totient is φ = 5912962848.

The previous prime is 12012212117. The next prime is 12012212131. The reversal of 12012212122 is 22121221021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12012212096 and 12012212105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54723 + ... + 164374.

It is an arithmetic number, because the mean of its divisors is an integer number (1143691560).

Almost surely, 2^12012212122 is an apocalyptic number.

12012212122 is a deficient number, since it is larger than the sum of its proper divisors (6286852838).

12012212122 is a wasteful number, since it uses less digits than its factorization.

12012212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219525.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12012212122 its reverse (22121221021), we get a palindrome (34133433143).

The spelling of 12012212122 in words is "twelve billion, twelve million, two hundred twelve thousand, one hundred twenty-two".