2243312021 has 16 divisors (see below), whose sum is σ = 2360168448. Its totient is φ = 2130030000.

The previous prime is 2243312011. The next prime is 2243312033. The reversal of 2243312021 is 1202133422.

2243312021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2243312021 - 2¹⁰ = 2243310997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2243311984 and 2243312002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243312011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301496 + ... + 308846.

It is an arithmetic number, because the mean of its divisors is an integer number (147510528).

Almost surely, 2^2243312021 is an apocalyptic number.

It is an amenable number.

2243312021 is a deficient number, since it is larger than the sum of its proper divisors (116856427).

2243312021 is a wasteful number, since it uses less digits than its factorization.

2243312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7592.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2243312021 is about 47363.6149486080. The cubic root of 2243312021 is about 1309.0710779519.

Adding to 2243312021 its reverse (1202133422), we get a palindrome (3445445443).

The spelling of 2243312021 in words is "two billion, two hundred forty-three million, three hundred twelve thousand, twenty-one".