12021002012222 has 24 divisors (see below), whose sum is σ = 21043745780904. Its totient is φ = 5135076695952.

The previous prime is 12021002012141. The next prime is 12021002012237. The reversal of 12021002012222 is 22221020012021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12021002012222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199747253 + ... + 199807424.

It is an arithmetic number, because the mean of its divisors is an integer number (876822740871).

Almost surely, 2^{12021002012222} is an apocalyptic number.

12021002012222 is a deficient number, since it is larger than the sum of its proper divisors (9022743768682).

12021002012222 is a wasteful number, since it uses less digits than its factorization.

12021002012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399555000 (or 399554993 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12021002012222 its reverse (22221020012021), we get a palindrome (34242022024243).

The spelling of 12021002012222 in words is "twelve trillion, twenty-one billion, two million, twelve thousand, two hundred twenty-two".