2021532213 has 4 divisors (see below), whose sum is σ = 2695376288. Its totient is φ = 1347688140.

The previous prime is 2021532209. The next prime is 2021532221. The reversal of 2021532213 is 3122351202.

2021532213 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 2021532213 - 2² = 2021532209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021532213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021539213) 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, 336922033 + ... + 336922038.

It is an arithmetic number, because the mean of its divisors is an integer number (673844072).

Almost surely, 2^2021532213 is an apocalyptic number.

It is an amenable number.

2021532213 is a deficient number, since it is larger than the sum of its proper divisors (673844075).

2021532213 is an equidigital number, since it uses as much as digits as its factorization.

2021532213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673844074.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2021532213 is about 44961.4525232448. The cubic root of 2021532213 is about 1264.4264014072.

Adding to 2021532213 its reverse (3122351202), we get a palindrome (5143883415).

The spelling of 2021532213 in words is "two billion, twenty-one million, five hundred thirty-two thousand, two hundred thirteen".