4512242021 has 4 divisors (see below), whose sum is σ = 5156848032. Its totient is φ = 3867636012.

The previous prime is 4512241997. The next prime is 4512242027. The reversal of 4512242021 is 1202422154.

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 not a de Polignac number, because 4512242021 - 2⁶ = 4512241957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4512242027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322302995 + ... + 322303008.

It is an arithmetic number, because the mean of its divisors is an integer number (1289212008).

Almost surely, 2^4512242021 is an apocalyptic number.

It is an amenable number.

4512242021 is a deficient number, since it is larger than the sum of its proper divisors (644606011).

4512242021 is an equidigital number, since it uses as much as digits as its factorization.

4512242021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644606010.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 4512242021 is about 67173.2239884316. The cubic root of 4512242021 is about 1652.4593897233.

Adding to 4512242021 its reverse (1202422154), we get a palindrome (5714664175).

The spelling of 4512242021 in words is "four billion, five hundred twelve million, two hundred forty-two thousand, twenty-one".