2344400221 has 2 divisors, whose sum is σ = 2344400222. Its totient is φ = 2344400220.

The previous prime is 2344400209. The next prime is 2344400239. The reversal of 2344400221 is 1220044432.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1437547225 + 906852996 = 37915^2 + 30114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2344400221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2344400192 and 2344400201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2344400921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1172200110 + 1172200111.

It is an arithmetic number, because the mean of its divisors is an integer number (1172200111).

Almost surely, 2^2344400221 is an apocalyptic number.

It is an amenable number.

2344400221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2344400221 is an equidigital number, since it uses as much as digits as its factorization.

2344400221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2344400221 is about 48419.0068155058. The cubic root of 2344400221 is about 1328.4460379725.

Adding to 2344400221 its reverse (1220044432), we get a palindrome (3564444653).

The spelling of 2344400221 in words is "two billion, three hundred forty-four million, four hundred thousand, two hundred twenty-one".