2120122320 has 80 divisors (see below), whose sum is σ = 6588304512. Its totient is φ = 563996160.

The previous prime is 2120122261. The next prime is 2120122321. The reversal of 2120122320 is 232210212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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 2120122320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120122321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90549 + ... + 111531.

Almost surely, 2^2120122320 is an apocalyptic number.

2120122320 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 2120122320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3294152256).

2120122320 is an abundant number, since it is smaller than the sum of its proper divisors (4468182192).

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

2120122320 is a wasteful number, since it uses less digits than its factorization.

2120122320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21420 (or 21414 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2120122320 is about 46044.7860240440. The cubic root of 2120122320 is about 1284.6563641782.

Adding to 2120122320 its reverse (232210212), we get a palindrome (2352332532).

The spelling of 2120122320 in words is "two billion, one hundred twenty million, one hundred twenty-two thousand, three hundred twenty".