22121111221222 has 24 divisors (see below), whose sum is σ = 35981121991680. Its totient is φ = 10195343327520.

The previous prime is 22121111221133. The next prime is 22121111221229. The reversal of 22121111221222 is 22212211112122.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22121111221193 and 22121111221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121111221229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45914854 + ... + 46394137.

It is an arithmetic number, because the mean of its divisors is an integer number (1499213416320).

Almost surely, 2^{22121111221222} is an apocalyptic number.

22121111221222 is a deficient number, since it is larger than the sum of its proper divisors (13860010770458).

22121111221222 is a wasteful number, since it uses less digits than its factorization.

22121111221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92309728 (or 92309715 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

Adding to 22121111221222 its reverse (22212211112122), we get a palindrome (44333322333344).

The spelling of 22121111221222 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twenty-two".