11111111210122 has 256 divisors, whose sum is σ = 23293900062720. Its totient is φ = 3842012160000.

The previous prime is 11111111210099. The next prime is 11111111210191. The reversal of 11111111210122 is 22101211111111.

It is a junction number, because it is equal to n+sod(n) for n = 11111111210096 and 11111111210105.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3690171597 + ... + 3690174607.

It is an arithmetic number, because the mean of its divisors is an integer number (90991797120).

Almost surely, 2^{11111111210122} is an apocalyptic number.

11111111210122 is an abundant number, since it is smaller than the sum of its proper divisors (12182788852598).

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

11111111210122 is a wasteful number, since it uses less digits than its factorization.

11111111210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4229.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11111111210122 its reverse (22101211111111), we get a palindrome (33212322321233).

The spelling of 11111111210122 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, two hundred ten thousand, one hundred twenty-two".