11123122122 has 64 divisors (see below), whose sum is σ = 28528992000. Its totient is φ = 3146558400.

The previous prime is 11123122039. The next prime is 11123122141. The reversal of 11123122122 is 22122132111.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11123122095 and 11123122104.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107497 + ... + 183852.

It is an arithmetic number, because the mean of its divisors is an integer number (445765500).

Almost surely, 2^11123122122 is an apocalyptic number.

11123122122 is an abundant number, since it is smaller than the sum of its proper divisors (17405869878).

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

11123122122 is a wasteful number, since it uses less digits than its factorization.

11123122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291468 (or 291462 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 11123122122 its reverse (22122132111), we get a palindrome (33245254233).

The spelling of 11123122122 in words is "eleven billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred twenty-two".