2243304021 has 8 divisors (see below), whose sum is σ = 3418368064. Its totient is φ = 1281888000.

The previous prime is 2243304017. The next prime is 2243304079. The reversal of 2243304021 is 1204033422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2243304021 - 2² = 2243304017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 106824001 = 2243304021 / (2 + 2 + 4 + 3 + 3 + 0 + 4 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243304121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53411980 + ... + 53412021.

It is an arithmetic number, because the mean of its divisors is an integer number (427296008).

Almost surely, 2^2243304021 is an apocalyptic number.

2243304021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2243304021 is a deficient number, since it is larger than the sum of its proper divisors (1175064043).

2243304021 is a wasteful number, since it uses less digits than its factorization.

2243304021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106824011.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2243304021 is about 47363.5304955194. The cubic root of 2243304021 is about 1309.0695218329.

Adding to 2243304021 its reverse (1204033422), we get a palindrome (3447337443).

The spelling of 2243304021 in words is "two billion, two hundred forty-three million, three hundred four thousand, twenty-one".