1111221211222 has 8 divisors (see below), whose sum is σ = 1678018608000. Its totient is φ = 551881675224.

The previous prime is 1111221211189. The next prime is 1111221211223. The reversal of 1111221211222 is 2221121221111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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 1111221211222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111221211223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1864464822 + ... + 1864465417.

It is an arithmetic number, because the mean of its divisors is an integer number (209752326000).

Almost surely, 2^{1111221211222} is an apocalyptic number.

1111221211222 is a deficient number, since it is larger than the sum of its proper divisors (566797396778).

1111221211222 is a wasteful number, since it uses less digits than its factorization.

1111221211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728930390.

The product of its digits is 64, while the sum is 19.

Adding to 1111221211222 its reverse (2221121221111), we get a palindrome (3332342432333).

The spelling of 1111221211222 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, two hundred eleven thousand, two hundred twenty-two".