11111111220122 has 8 divisors (see below), whose sum is σ = 16670676144276. Its totient is φ = 5554219172032.

The previous prime is 11111111220113. The next prime is 11111111220133. The reversal of 11111111220122 is 22102211111111.

It can be written as a sum of positive squares in 2 ways, for example, as 10930436066641 + 180675153481 = 3306121^2 + 425059^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 11111111220122.

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, 668208623 + ... + 668225250.

Almost surely, 2^{11111111220122} is an apocalyptic number.

11111111220122 is a deficient number, since it is larger than the sum of its proper divisors (5559564924154).

11111111220122 is a wasteful number, since it uses less digits than its factorization.

11111111220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336438032.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11111111220122 its reverse (22102211111111), we get a palindrome (33213322331233).

The spelling of 11111111220122 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, two hundred twenty thousand, one hundred twenty-two".