4223253242521 has 16 divisors (see below), whose sum is σ = 4297140207360. Its totient is φ = 4149939341520.

The previous prime is 4223253242513. The next prime is 4223253242561. The reversal of 4223253242521 is 1252423523224.

4223253242521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 4223253242521 - 2³ = 4223253242513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4223253242561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27576666 + ... + 27729388.

It is an arithmetic number, because the mean of its divisors is an integer number (268571262960).

Almost surely, 2^{4223253242521} is an apocalyptic number.

It is an amenable number.

4223253242521 is a deficient number, since it is larger than the sum of its proper divisors (73886964839).

4223253242521 is a wasteful number, since it uses less digits than its factorization.

4223253242521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154596.

The product of its digits is 230400, while the sum is 37.

Adding to 4223253242521 its reverse (1252423523224), we get a palindrome (5475676765745).

The spelling of 4223253242521 in words is "four trillion, two hundred twenty-three billion, two hundred fifty-three million, two hundred forty-two thousand, five hundred twenty-one".