4524011221 has 4 divisors (see below), whose sum is σ = 4524439744. Its totient is φ = 4523582700.

The previous prime is 4524011183. The next prime is 4524011231. The reversal of 4524011221 is 1221104254.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4524011221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4524011192 and 4524011201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4524011231) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 198015 + ... + 219676.

It is an arithmetic number, because the mean of its divisors is an integer number (1131109936).

Almost surely, 2^4524011221 is an apocalyptic number.

It is an amenable number.

4524011221 is a deficient number, since it is larger than the sum of its proper divisors (428523).

4524011221 is a wasteful number, since it uses less digits than its factorization.

4524011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428522.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 4524011221 is about 67260.7702974029. The cubic root of 4524011221 is about 1653.8948358338.

Adding to 4524011221 its reverse (1221104254), we get a palindrome (5745115475).

The spelling of 4524011221 in words is "four billion, five hundred twenty-four million, eleven thousand, two hundred twenty-one".