1343100221 has 2 divisors, whose sum is σ = 1343100222. Its totient is φ = 1343100220.

The previous prime is 1343100211. The next prime is 1343100271. The reversal of 1343100221 is 1220013431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1330060900 + 13039321 = 36470^2 + 3611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1343100221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1343100221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1343100211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671550110 + 671550111.

It is an arithmetic number, because the mean of its divisors is an integer number (671550111).

Almost surely, 2^1343100221 is an apocalyptic number.

It is an amenable number.

1343100221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1343100221 is an equidigital number, since it uses as much as digits as its factorization.

1343100221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1343100221 is about 36648.3317628511. The cubic root of 1343100221 is about 1103.3233435466.

Adding to 1343100221 its reverse (1220013431), we get a palindrome (2563113652).

The spelling of 1343100221 in words is "one billion, three hundred forty-three million, one hundred thousand, two hundred twenty-one".