1123122120 has 32 divisors (see below), whose sum is σ = 3369366720. Its totient is φ = 299499200.

The previous prime is 1123122109. The next prime is 1123122127. The reversal of 1123122120 is 212213211.

It is a super-3 number, since 3×1123122120³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1123122120.

It is not an unprimeable number, because it can be changed into a prime (1123122127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4679556 + ... + 4679795.

It is an arithmetic number, because the mean of its divisors is an integer number (105292710).

Almost surely, 2^1123122120 is an apocalyptic number.

1123122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123122120 is an abundant number, since it is smaller than the sum of its proper divisors (2246244600).

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

1123122120 is a wasteful number, since it uses less digits than its factorization.

1123122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9359365 (or 9359361 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1123122120 is about 33513.0141885209. The cubic root of 1123122120 is about 1039.4629006752.

Adding to 1123122120 its reverse (212213211), we get a palindrome (1335335331).

The spelling of 1123122120 in words is "one billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred twenty".