11111221322 has 4 divisors (see below), whose sum is σ = 16666831986. Its totient is φ = 5555610660.

The previous prime is 11111221321. The next prime is 11111221333. The reversal of 11111221322 is 22312211111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9896071441 + 1215149881 = 99479^2 + 34859^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11111221322.

It is not an unprimeable number, because it can be changed into a prime (11111221321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777805329 + ... + 2777805332.

Almost surely, 2^11111221322 is an apocalyptic number.

11111221322 is a deficient number, since it is larger than the sum of its proper divisors (5555610664).

11111221322 is an equidigital number, since it uses as much as digits as its factorization.

11111221322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555610663.

The product of its digits is 48, while the sum is 17.

Adding to 11111221322 its reverse (22312211111), we get a palindrome (33423432433).

The spelling of 11111221322 in words is "eleven billion, one hundred eleven million, two hundred twenty-one thousand, three hundred twenty-two".