2204005421 has 2 divisors, whose sum is σ = 2204005422. Its totient is φ = 2204005420.

The previous prime is 2204005417. The next prime is 2204005459. The reversal of 2204005421 is 1245004022.

It is a happy number.

2204005421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1340292100 + 863713321 = 36610^2 + 29389^2 .

It is a cyclic number.

It is not a de Polignac number, because 2204005421 - 2² = 2204005417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2204005393 and 2204005402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2204005411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102002710 + 1102002711.

It is an arithmetic number, because the mean of its divisors is an integer number (1102002711).

Almost surely, 2^2204005421 is an apocalyptic number.

It is an amenable number.

2204005421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2204005421 is an equidigital number, since it uses as much as digits as its factorization.

2204005421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2204005421 is about 46946.8361127776. The cubic root of 2204005421 is about 1301.3802738191.

Adding to 2204005421 its reverse (1245004022), we get a palindrome (3449009443).

The spelling of 2204005421 in words is "two billion, two hundred four million, five thousand, four hundred twenty-one".