2021233321 has 4 divisors (see below), whose sum is σ = 2037148672. Its totient is φ = 2005317972.

The previous prime is 2021233303. The next prime is 2021233327. The reversal of 2021233321 is 1233321202.

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 2021233321 - 2⁵ = 2021233289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021233327) 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, 7957485 + ... + 7957738.

It is an arithmetic number, because the mean of its divisors is an integer number (509287168).

Almost surely, 2^2021233321 is an apocalyptic number.

It is an amenable number.

2021233321 is a deficient number, since it is larger than the sum of its proper divisors (15915351).

2021233321 is a wasteful number, since it uses less digits than its factorization.

2021233321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15915350.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2021233321 is about 44958.1285308897. The cubic root of 2021233321 is about 1264.3640814235.

Adding to 2021233321 its reverse (1233321202), we get a palindrome (3254554523).

The spelling of 2021233321 in words is "two billion, twenty-one million, two hundred thirty-three thousand, three hundred twenty-one".