22011111222222 has 16 divisors (see below), whose sum is σ = 46611764941392. Its totient is φ = 6905446657920.

The previous prime is 22011111222211. The next prime is 22011111222223. The reversal of 22011111222222 is 22222211111022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011111222223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 107897603929 + ... + 107897604132.

It is an arithmetic number, because the mean of its divisors is an integer number (2913235308837).

Almost surely, 2^{22011111222222} is an apocalyptic number.

22011111222222 is an abundant number, since it is smaller than the sum of its proper divisors (24600653719170).

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

22011111222222 is a wasteful number, since it uses less digits than its factorization.

22011111222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215795208083.

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

Adding to 22011111222222 its reverse (22222211111022), we get a palindrome (44233322333244).

The spelling of 22011111222222 in words is "twenty-two trillion, eleven billion, one hundred eleven million, two hundred twenty-two thousand, two hundred twenty-two".