22111221122 has 8 divisors (see below), whose sum is σ = 35117821836. Its totient is φ = 10405280512.

The previous prime is 22111221089. The next prime is 22111221137. The reversal of 22111221122 is 22112211122.

It can be written as a sum of positive squares in 2 ways, for example, as 19301267041 + 2809954081 = 138929^2 + 53009^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (17).

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 22111221122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325164983 + ... + 325165050.

Almost surely, 2^22111221122 is an apocalyptic number.

22111221122 is a deficient number, since it is larger than the sum of its proper divisors (13006600714).

22111221122 is a wasteful number, since it uses less digits than its factorization.

22111221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650330052.

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

Adding to 22111221122 its reverse (22112211122), we get a palindrome (44223432244).

The spelling of 22111221122 in words is "twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twenty-two".