22012021221222 has 16 divisors (see below), whose sum is σ = 44034321280320. Its totient is φ = 7335627267432.

The previous prime is 22012021221181. The next prime is 22012021221227. The reversal of 22012021221222 is 22212212021022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012021221227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428257072 + ... + 428308467.

It is an arithmetic number, because the mean of its divisors is an integer number (2752145080020).

Almost surely, 2^{22012021221222} is an apocalyptic number.

22012021221222 is an abundant number, since it is smaller than the sum of its proper divisors (22022300059098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22012021221222 is a wasteful number, since it uses less digits than its factorization.

22012021221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856569827.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22012021221222 its reverse (22212212021022), we get a palindrome (44224233242244).

The spelling of 22012021221222 in words is "twenty-two trillion, twelve billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".