11112221122 has 8 divisors (see below), whose sum is σ = 17648821836. Its totient is φ = 5229280512.

The previous prime is 11112221119. The next prime is 11112221161. The reversal of 11112221122 is 22112221111.

It can be written as a sum of positive squares in 2 ways, for example, as 10844931321 + 267289801 = 104139^2 + 16349^2 .

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 zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11112221096 and 11112221105.

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, 163414983 + ... + 163415050.

Almost surely, 2^11112221122 is an apocalyptic number.

11112221122 is a deficient number, since it is larger than the sum of its proper divisors (6536600714).

11112221122 is a wasteful number, since it uses less digits than its factorization.

11112221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326830052.

The product of its digits is 32, while the sum is 16.

Adding to 11112221122 its reverse (22112221111), we get a palindrome (33224442233).

The spelling of 11112221122 in words is "eleven billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twenty-two".