2421345121 has 8 divisors (see below), whose sum is σ = 2656803240. Its totient is φ = 2192915712.

The previous prime is 2421345109. The next prime is 2421345149. The reversal of 2421345121 is 1215431242.

It can be written as a sum of positive squares in 4 ways, for example, as 7096896 + 2414248225 = 2664^2 + 49135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2421345121 - 2¹⁵ = 2421312353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2421345721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1756456 + ... + 1757833.

It is an arithmetic number, because the mean of its divisors is an integer number (332100405).

Almost surely, 2^2421345121 is an apocalyptic number.

It is an amenable number.

2421345121 is a deficient number, since it is larger than the sum of its proper divisors (235458119).

2421345121 is a wasteful number, since it uses less digits than its factorization.

2421345121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514355.

The product of its digits is 1920, while the sum is 25.

The square root of 2421345121 is about 49207.1653420516. The cubic root of 2421345121 is about 1342.8233928998.

Adding to 2421345121 its reverse (1215431242), we get a palindrome (3636776363).

The spelling of 2421345121 in words is "two billion, four hundred twenty-one million, three hundred forty-five thousand, one hundred twenty-one".