11221111111222 has 16 divisors (see below), whose sum is σ = 17233039319760. Its totient is φ = 5476915255392.

The previous prime is 11221111111181. The next prime is 11221111111229. The reversal of 11221111111222 is 22211111112211.

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

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 11221111111222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221111111229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37496097 + ... + 37794172.

It is an arithmetic number, because the mean of its divisors is an integer number (1077064957485).

Almost surely, 2^{11221111111222} is an apocalyptic number.

11221111111222 is a deficient number, since it is larger than the sum of its proper divisors (6011928208538).

11221111111222 is a wasteful number, since it uses less digits than its factorization.

11221111111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75292047.

The product of its digits is 32, while the sum is 19.

Adding to 11221111111222 its reverse (22211111112211), we get a palindrome (33432222223433).

The spelling of 11221111111222 in words is "eleven trillion, two hundred twenty-one billion, one hundred eleven million, one hundred eleven thousand, two hundred twenty-two".