1120331220 has 24 divisors (see below), whose sum is σ = 3136927584. Its totient is φ = 298754976.

The previous prime is 1120331213. The next prime is 1120331231. The reversal of 1120331220 is 221330211.

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 1120331220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9336034 + ... + 9336153.

It is an arithmetic number, because the mean of its divisors is an integer number (130705316).

Almost surely, 2^1120331220 is an apocalyptic number.

1120331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120331220 is an abundant number, since it is smaller than the sum of its proper divisors (2016596364).

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

1120331220 is a wasteful number, since it uses less digits than its factorization.

1120331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18672199 (or 18672197 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1120331220 is about 33471.3492408059. The cubic root of 1120331220 is about 1038.6011827741.

Adding to 1120331220 its reverse (221330211), we get a palindrome (1341661431).

The spelling of 1120331220 in words is "one billion, one hundred twenty million, three hundred thirty-one thousand, two hundred twenty".