2121321030 has 64 divisors (see below), whose sum is σ = 5505408000. Its totient is φ = 521076224.

The previous prime is 2121321011. The next prime is 2121321053. The reversal of 2121321030 is 301231212.

2121321030 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

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, 20280 + ... + 68219.

It is an arithmetic number, because the mean of its divisors is an integer number (86022000).

Almost surely, 2^2121321030 is an apocalyptic number.

2121321030 is an abundant number, since it is smaller than the sum of its proper divisors (3384086970).

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

2121321030 is a wasteful number, since it uses less digits than its factorization.

2121321030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88573.

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

The square root of 2121321030 is about 46057.8009679142. The cubic root of 2121321030 is about 1284.8984320192.

Adding to 2121321030 its reverse (301231212), we get a palindrome (2422552242).

The spelling of 2121321030 in words is "two billion, one hundred twenty-one million, three hundred twenty-one thousand, thirty".