22221221120012 has 12 divisors (see below), whose sum is σ = 38887176634320. Its totient is φ = 11110599224496.

The previous prime is 22221221120003. The next prime is 22221221120069. The reversal of 22221221120012 is 21002112212222.

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 3 ways as a sum of consecutive naturals, for example, 2838314 + ... + 7245582.

It is an arithmetic number, because the mean of its divisors is an integer number (3240598052860).

Almost surely, 2^{22221221120012} is an apocalyptic number.

It is an amenable number.

22221221120012 is a deficient number, since it is larger than the sum of its proper divisors (16665955514308).

22221221120012 is a wasteful number, since it uses less digits than its factorization.

22221221120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5667760 (or 5667758 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22221221120012 its reverse (21002112212222), we get a palindrome (43223333332234).

The spelling of 22221221120012 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred twenty thousand, twelve".