11111111302122 has 192 divisors, whose sum is σ = 26862518592000. Its totient is φ = 3297748446720.

The previous prime is 11111111302111. The next prime is 11111111302163. The reversal of 11111111302122 is 22120311111111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11111111302095 and 11111111302104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 316097004 + ... + 316132152.

It is an arithmetic number, because the mean of its divisors is an integer number (139908951000).

Almost surely, 2^{11111111302122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111111302122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13431259296000).

11111111302122 is an abundant number, since it is smaller than the sum of its proper divisors (15751407289878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111111302122 is a wasteful number, since it uses less digits than its factorization.

11111111302122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35653 (or 35650 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 11111111302122 its reverse (22120311111111), we get a palindrome (33231422413233).

The spelling of 11111111302122 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, three hundred two thousand, one hundred twenty-two".