2121301230 has 64 divisors (see below), whose sum is σ = 5185382400. Its totient is φ = 555246720.

The previous prime is 2121301219. The next prime is 2121301249. The reversal of 2121301230 is 321031212.

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

It is a Curzon number.

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, 1205091 + ... + 1206849.

It is an arithmetic number, because the mean of its divisors is an integer number (81021600).

Almost surely, 2^2121301230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121301230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2592691200).

2121301230 is an abundant number, since it is smaller than the sum of its proper divisors (3064081170).

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

2121301230 is a wasteful number, since it uses less digits than its factorization.

2121301230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489.

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

The square root of 2121301230 is about 46057.5860201118. The cubic root of 2121301230 is about 1284.8944343423.

Adding to 2121301230 its reverse (321031212), we get a palindrome (2442332442).

The spelling of 2121301230 in words is "two billion, one hundred twenty-one million, three hundred one thousand, two hundred thirty".