1121332120 has 64 divisors (see below), whose sum is σ = 2666584800. Its totient is φ = 423198720.

The previous prime is 1121332117. The next prime is 1121332129. The reversal of 1121332120 is 212331211.

It is a junction number, because it is equal to n+sod(n) for n = 1121332094 and 1121332103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121332129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192450 + ... + 198190.

Almost surely, 2^1121332120 is an apocalyptic number.

1121332120 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 1121332120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1333292400).

1121332120 is an abundant number, since it is smaller than the sum of its proper divisors (1545252680).

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

1121332120 is a wasteful number, since it uses less digits than its factorization.

1121332120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6028 (or 6024 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1121332120 is about 33486.2974961401. The cubic root of 1121332120 is about 1038.9103849357.

Adding to 1121332120 its reverse (212331211), we get a palindrome (1333663331).

Subtracting from 1121332120 its reverse (212331211), we obtain a palindrome (909000909).

The spelling of 1121332120 in words is "one billion, one hundred twenty-one million, three hundred thirty-two thousand, one hundred twenty".