11221121222 has 16 divisors (see below), whose sum is σ = 16918225920. Its totient is φ = 5581757832.

The previous prime is 11221121209. The next prime is 11221121237. The reversal of 11221121222 is 22212112211.

11221121222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11221121222² (a number of 21 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11221121222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516593 + ... + 537875.

It is an arithmetic number, because the mean of its divisors is an integer number (1057389120).

Almost surely, 2^11221121222 is an apocalyptic number.

11221121222 is a deficient number, since it is larger than the sum of its proper divisors (5697104698).

11221121222 is a wasteful number, since it uses less digits than its factorization.

11221121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22627.

The product of its digits is 64, while the sum is 17.

Adding to 11221121222 its reverse (22212112211), we get a palindrome (33433233433).

The spelling of 11221121222 in words is "eleven billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-two".