20111101222222 has 16 divisors (see below), whose sum is σ = 31478874094080. Its totient is φ = 9618160654872.

The previous prime is 20111101222217. The next prime is 20111101222273. The reversal of 20111101222222 is 22222210111102.

It is a self number, because there is not a number n which added to its sum of digits gives 20111101222222.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2024298 + ... + 6657325.

It is an arithmetic number, because the mean of its divisors is an integer number (1967429630880).

Almost surely, 2^{20111101222222} is an apocalyptic number.

20111101222222 is a deficient number, since it is larger than the sum of its proper divisors (11367772871858).

20111101222222 is a wasteful number, since it uses less digits than its factorization.

20111101222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8732007.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20111101222222 its reverse (22222210111102), we get a palindrome (42333311333324).

The spelling of 20111101222222 in words is "twenty trillion, one hundred eleven billion, one hundred one million, two hundred twenty-two thousand, two hundred twenty-two".