12222221122 has 8 divisors (see below), whose sum is σ = 18333805500. Its totient is φ = 6110952624.

The previous prime is 12222221119. The next prime is 12222221131. The reversal of 12222221122 is 22112222221.

It can be written as a sum of positive squares in 2 ways, for example, as 12194564041 + 27657081 = 110429^2 + 5259^2 .

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 12222221122.

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, 90504 + ... + 180652.

Almost surely, 2^12222221122 is an apocalyptic number.

12222221122 is a deficient number, since it is larger than the sum of its proper divisors (6111584378).

12222221122 is an equidigital number, since it uses as much as digits as its factorization.

12222221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157940.

The product of its digits is 256, while the sum is 19.

Adding to 12222221122 its reverse (22112222221), we get a palindrome (34334443343).

The spelling of 12222221122 in words is "twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-two".