11122122122120 has 128 divisors (see below), whose sum is σ = 25756912621440. Its totient is φ = 4319920926720.

The previous prime is 11122122122071. The next prime is 11122122122147. The reversal of 11122122122120 is 2122122122111.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11122122122092 and 11122122122101.

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, 1629134147 + ... + 1629140973.

It is an arithmetic number, because the mean of its divisors is an integer number (201225879855).

Almost surely, 2^{11122122122120} is an apocalyptic number.

11122122122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11122122122120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12878456310720).

11122122122120 is an abundant number, since it is smaller than the sum of its proper divisors (14634790499320).

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

11122122122120 is a wasteful number, since it uses less digits than its factorization.

11122122122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12295 (or 12291 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11122122122120 its reverse (2122122122111), we get a palindrome (13244244244231).

Subtracting from 11122122122120 its reverse (2122122122111), we obtain a palindrome (9000000000009).

The spelling of 11122122122120 in words is "eleven trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty".