11112121220122 has 16 divisors (see below), whose sum is σ = 17959792325832. Its totient is φ = 5125973428800.

The previous prime is 11112121219957. The next prime is 11112121220147. The reversal of 11112121220122 is 22102212121111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7658065517041 + 3454055703081 = 2767321^2 + 1858509^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11112121220122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112362273 + ... + 112461124.

Almost surely, 2^{11112121220122} is an apocalyptic number.

11112121220122 is a deficient number, since it is larger than the sum of its proper divisors (6847671105710).

11112121220122 is a wasteful number, since it uses less digits than its factorization.

11112121220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224825313.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11112121220122 its reverse (22102212121111), we get a palindrome (33214333341233).

The spelling of 11112121220122 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".