4213532021 has 4 divisors (see below), whose sum is σ = 4214940000. Its totient is φ = 4212124044.

The previous prime is 4213531981. The next prime is 4213532033. The reversal of 4213532021 is 1202353124.

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 4213532021 - 2²⁶ = 4146423157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4213532221) 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, 699491 + ... + 705488.

It is an arithmetic number, because the mean of its divisors is an integer number (1053735000).

Almost surely, 2^4213532021 is an apocalyptic number.

It is an amenable number.

4213532021 is a deficient number, since it is larger than the sum of its proper divisors (1407979).

4213532021 is a wasteful number, since it uses less digits than its factorization.

4213532021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407978.

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

The square root of 4213532021 is about 64911.7248345782. The cubic root of 4213532021 is about 1615.1595622364.

Adding to 4213532021 its reverse (1202353124), we get a palindrome (5415885145).

The spelling of 4213532021 in words is "four billion, two hundred thirteen million, five hundred thirty-two thousand, twenty-one".