2101120320 has 224 divisors, whose sum is σ = 7563185280. Its totient is φ = 489922560.

The previous prime is 2101120303. The next prime is 2101120363. The reversal of 2101120320 is 230211012.

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 = 2101120296 and 2101120305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232690 + ... + 241550.

It is an arithmetic number, because the mean of its divisors is an integer number (33764220).

Almost surely, 2^2101120320 is an apocalyptic number.

2101120320 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 2101120320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3781592640).

2101120320 is an abundant number, since it is smaller than the sum of its proper divisors (5462064960).

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

2101120320 is a wasteful number, since it uses less digits than its factorization.

2101120320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8913 (or 8903 counting only the distinct ones).

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

The square root of 2101120320 is about 45837.9790130411. The cubic root of 2101120320 is about 1280.8068480672.

Adding to 2101120320 its reverse (230211012), we get a palindrome (2331331332).

The spelling of 2101120320 in words is "two billion, one hundred one million, one hundred twenty thousand, three hundred twenty".