12021122231212 has 48 divisors (see below), whose sum is σ = 22564146931200. Its totient is φ = 5586242950080.

The previous prime is 12021122231189. The next prime is 12021122231219. The reversal of 12021122231212 is 21213222112021.

It is not an unprimeable number, because it can be changed into a prime (12021122231219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43602637 + ... + 43877467.

It is an arithmetic number, because the mean of its divisors is an integer number (470086394400).

Almost surely, 2^{12021122231212} is an apocalyptic number.

It is an amenable number.

12021122231212 is a deficient number, since it is larger than the sum of its proper divisors (10543024699988).

12021122231212 is a wasteful number, since it uses less digits than its factorization.

12021122231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285766 (or 285764 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 12021122231212 its reverse (21213222112021), we get a palindrome (33234344343233).

The spelling of 12021122231212 in words is "twelve trillion, twenty-one billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred twelve".