2120312130 has 64 divisors (see below), whose sum is σ = 5232923136. Its totient is φ = 549504000.

The previous prime is 2120312123. The next prime is 2120312141. The reversal of 2120312130 is 312130212.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 330150 + ... + 336510.

It is an arithmetic number, because the mean of its divisors is an integer number (81764424).

Almost surely, 2^2120312130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120312130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2616461568).

2120312130 is an abundant number, since it is smaller than the sum of its proper divisors (3112611006).

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

2120312130 is a wasteful number, since it uses less digits than its factorization.

2120312130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6683.

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

The square root of 2120312130 is about 46046.8471233373. The cubic root of 2120312130 is about 1284.6947005430.

Adding to 2120312130 its reverse (312130212), we get a palindrome (2432442342).

It can be divided in two parts, 21203 and 12130, that added together give a palindrome (33333).

The spelling of 2120312130 in words is "two billion, one hundred twenty million, three hundred twelve thousand, one hundred thirty".