2111320320 has 144 divisors (see below), whose sum is σ = 6762860160. Its totient is φ = 561364992.

The previous prime is 2111320313. The next prime is 2111320331. The reversal of 2111320320 is 230231112.

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 2111320320.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1869516 + ... + 1870644.

Almost surely, 2^2111320320 is an apocalyptic number.

2111320320 is a gapful number since it is divisible by the number (20) 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 2111320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3381430080).

2111320320 is an abundant number, since it is smaller than the sum of its proper divisors (4651539840).

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

2111320320 is a wasteful number, since it uses less digits than its factorization.

2111320320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 1626 counting only the distinct ones).

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

The square root of 2111320320 is about 45949.1057584367. The cubic root of 2111320320 is about 1282.8760848493.

Adding to 2111320320 its reverse (230231112), we get a palindrome (2341551432).

The spelling of 2111320320 in words is "two billion, one hundred eleven million, three hundred twenty thousand, three hundred twenty".