2101321120 has 48 divisors (see below), whose sum is σ = 5070014208. Its totient is φ = 822641920.

The previous prime is 2101321111. The next prime is 2101321141. The reversal of 2101321120 is 211231012.

It is a self number, because there is not a number n which added to its sum of digits gives 2101321120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132196 + ... + 147235.

It is an arithmetic number, because the mean of its divisors is an integer number (105625296).

Almost surely, 2^2101321120 is an apocalyptic number.

2101321120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101321120 is an abundant number, since it is smaller than the sum of its proper divisors (2968693088).

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

2101321120 is a wasteful number, since it uses less digits than its factorization.

2101321120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279493 (or 279485 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2101321120 is about 45840.1692841551. The cubic root of 2101321120 is about 1280.8476481776.

Adding to 2101321120 its reverse (211231012), we get a palindrome (2312552132).

The spelling of 2101321120 in words is "two billion, one hundred one million, three hundred twenty-one thousand, one hundred twenty".