2243234021 has 4 divisors (see below), whose sum is σ = 2563696032. Its totient is φ = 1922772012.

The previous prime is 2243234017. The next prime is 2243234047. The reversal of 2243234021 is 1204323422.

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 2243234021 - 2² = 2243234017 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 (2243230021) 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, 160230995 + ... + 160231008.

It is an arithmetic number, because the mean of its divisors is an integer number (640924008).

Almost surely, 2^2243234021 is an apocalyptic number.

It is an amenable number.

2243234021 is a deficient number, since it is larger than the sum of its proper divisors (320462011).

2243234021 is an equidigital number, since it uses as much as digits as its factorization.

2243234021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320462010.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2243234021 is about 47362.7915245713. The cubic root of 2243234021 is about 1309.0559056342.

Adding to 2243234021 its reverse (1204323422), we get a palindrome (3447557443).

The spelling of 2243234021 in words is "two billion, two hundred forty-three million, two hundred thirty-four thousand, twenty-one".