2121225324 has 48 divisors (see below), whose sum is σ = 5184103680. Its totient is φ = 673794880.

The previous prime is 2121225311. The next prime is 2121225343. The reversal of 2121225324 is 4235221212.

It is a junction number, because it is equal to n+sod(n) for n = 2121225294 and 2121225303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59959 + ... + 88529.

It is an arithmetic number, because the mean of its divisors is an integer number (108002160).

Almost surely, 2^2121225324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121225324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2592051840).

2121225324 is an abundant number, since it is smaller than the sum of its proper divisors (3062878356).

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

2121225324 is a wasteful number, since it uses less digits than its factorization.

2121225324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28870 (or 28868 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 2121225324 is about 46056.7619791057. The cubic root of 2121225324 is about 1284.8791084724.

Adding to 2121225324 its reverse (4235221212), we get a palindrome (6356446536).

The spelling of 2121225324 in words is "two billion, one hundred twenty-one million, two hundred twenty-five thousand, three hundred twenty-four".