1320201120 has 144 divisors (see below), whose sum is σ = 4837680288. Its totient is φ = 301754880.

The previous prime is 1320201109. The next prime is 1320201143. The reversal of 1320201120 is 211020231.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1320201096 and 1320201105.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4546 + ... + 51585.

It is an arithmetic number, because the mean of its divisors is an integer number (33595002).

Almost surely, 2^1320201120 is an apocalyptic number.

1320201120 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 1320201120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2418840144).

1320201120 is an abundant number, since it is smaller than the sum of its proper divisors (3517479168).

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

1320201120 is a wasteful number, since it uses less digits than its factorization.

1320201120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56163 (or 56148 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1320201120 is about 36334.5719666546. The cubic root of 1320201120 is about 1097.0170199953.

Adding to 1320201120 its reverse (211020231), we get a palindrome (1531221351).

The spelling of 1320201120 in words is "one billion, three hundred twenty million, two hundred one thousand, one hundred twenty".