2121002325 has 72 divisors (see below), whose sum is σ = 4115049120. Its totient is φ = 1038096000.

The previous prime is 2121002321. The next prime is 2121002347. The reversal of 2121002325 is 5232001212.

It is not a de Polignac number, because 2121002325 - 2² = 2121002321 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2121002298 and 2121002307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121002321) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 521550 + ... + 525600.

It is an arithmetic number, because the mean of its divisors is an integer number (57153460).

Almost surely, 2^2121002325 is an apocalyptic number.

2121002325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2121002325 is a deficient number, since it is larger than the sum of its proper divisors (1994046795).

2121002325 is a wasteful number, since it uses less digits than its factorization.

2121002325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4259 (or 4251 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2121002325 is about 46054.3410006049. The cubic root of 2121002325 is about 1284.8340815416.

Adding to 2121002325 its reverse (5232001212), we get a palindrome (7353003537).

The spelling of 2121002325 in words is "two billion, one hundred twenty-one million, two thousand, three hundred twenty-five".