22021122111222 has 64 divisors (see below), whose sum is σ = 49074031258560. Its totient is φ = 6540963878400.

The previous prime is 22021122111221. The next prime is 22021122111319. The reversal of 22021122111222 is 22211122112022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021122111221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12427072 + ... + 14088092.

It is an arithmetic number, because the mean of its divisors is an integer number (766781738415).

Almost surely, 2^{22021122111222} is an apocalyptic number.

22021122111222 is an abundant number, since it is smaller than the sum of its proper divisors (27052909147338).

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

22021122111222 is a wasteful number, since it uses less digits than its factorization.

22021122111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666929.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22021122111222 its reverse (22211122112022), we get a palindrome (44232244223244).

The spelling of 22021122111222 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twenty-two".