4223315021 has 4 divisors (see below), whose sum is σ = 4243330944. Its totient is φ = 4203299100.

The previous prime is 4223314969. The next prime is 4223315093. The reversal of 4223315021 is 1205133224.

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 4223315021 - 2¹⁴ = 4223298637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223311021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10007645 + ... + 10008066.

It is an arithmetic number, because the mean of its divisors is an integer number (1060832736).

Almost surely, 2^4223315021 is an apocalyptic number.

It is an amenable number.

4223315021 is a deficient number, since it is larger than the sum of its proper divisors (20015923).

4223315021 is a wasteful number, since it uses less digits than its factorization.

4223315021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20015922.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 4223315021 is about 64987.0373305323. The cubic root of 4223315021 is about 1616.4086245938.

Adding to 4223315021 its reverse (1205133224), we get a palindrome (5428448245).

The spelling of 4223315021 in words is "four billion, two hundred twenty-three million, three hundred fifteen thousand, twenty-one".