3442356221 has 2 divisors, whose sum is σ = 3442356222. Its totient is φ = 3442356220.

The previous prime is 3442356131. The next prime is 3442356227. The reversal of 3442356221 is 1226532443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2814302500 + 628053721 = 53050^2 + 25061^2 .

It is an emirp because it is prime and its reverse (1226532443) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3442356221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3442356227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1721178110 + 1721178111.

It is an arithmetic number, because the mean of its divisors is an integer number (1721178111).

Almost surely, 2^3442356221 is an apocalyptic number.

It is an amenable number.

3442356221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3442356221 is an equidigital number, since it uses as much as digits as its factorization.

3442356221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 32.

The square root of 3442356221 is about 58671.5963733730. The cubic root of 3442356221 is about 1509.9130428120.

Adding to 3442356221 its reverse (1226532443), we get a palindrome (4668888664).

The spelling of 3442356221 in words is "three billion, four hundred forty-two million, three hundred fifty-six thousand, two hundred twenty-one".