2120303220 has 96 divisors (see below), whose sum is σ = 6833971200. Its totient is φ = 481140864.

The previous prime is 2120303219. The next prime is 2120303221. The reversal of 2120303220 is 223030212.

It is an interprime number because it is at equal distance from previous prime (2120303219) and next prime (2120303221).

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 2120303220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120303221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40221 + ... + 76539.

It is an arithmetic number, because the mean of its divisors is an integer number (71187200).

Almost surely, 2^2120303220 is an apocalyptic number.

2120303220 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 2120303220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3416985600).

2120303220 is an abundant number, since it is smaller than the sum of its proper divisors (4713667980).

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

2120303220 is a wasteful number, since it uses less digits than its factorization.

2120303220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36477 (or 36475 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2120303220 is about 46046.7503739406. The cubic root of 2120303220 is about 1284.6929010209.

Adding to 2120303220 its reverse (223030212), we get a palindrome (2343333432).

The spelling of 2120303220 in words is "two billion, one hundred twenty million, three hundred three thousand, two hundred twenty".