2121320130 has 64 divisors (see below), whose sum is σ = 5495765760. Its totient is φ = 522427136.

The previous prime is 2121320077. The next prime is 2121320147. The reversal of 2121320130 is 310231212.

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, 32997 + ... + 73016.

It is an arithmetic number, because the mean of its divisors is an integer number (85871340).

Almost surely, 2^2121320130 is an apocalyptic number.

2121320130 is an abundant number, since it is smaller than the sum of its proper divisors (3374445630).

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

2121320130 is a wasteful number, since it uses less digits than its factorization.

2121320130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106075.

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

The square root of 2121320130 is about 46057.7911975813. The cubic root of 2121320130 is about 1284.8982503071.

Adding to 2121320130 its reverse (310231212), we get a palindrome (2431551342).

The spelling of 2121320130 in words is "two billion, one hundred twenty-one million, three hundred twenty thousand, one hundred thirty".