11111222120122 has 8 divisors (see below), whose sum is σ = 16666895736576. Its totient is φ = 5555590207932.

The previous prime is 11111222120081. The next prime is 11111222120149. The reversal of 11111222120122 is 22102122211111.

It is a happy number.

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 11111222120122.

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, 9751258 + ... + 10830949.

It is an arithmetic number, because the mean of its divisors is an integer number (2083361967072).

Almost surely, 2^{11111222120122} is an apocalyptic number.

11111222120122 is a deficient number, since it is larger than the sum of its proper divisors (5555673616454).

11111222120122 is a wasteful number, since it uses less digits than its factorization.

11111222120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20852132.

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

Adding to 11111222120122 its reverse (22102122211111), we get a palindrome (33213344331233).

The spelling of 11111222120122 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-two million, one hundred twenty thousand, one hundred twenty-two".