21343341011 has 2 divisors, whose sum is σ = 21343341012. Its totient is φ = 21343341010.

The previous prime is 21343341007. The next prime is 21343341023. The reversal of 21343341011 is 11014334312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21343341011 - 2² = 21343341007 is a prime.

It is not a weakly prime, because it can be changed into another prime (21343341511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671670505 + 10671670506.

It is an arithmetic number, because the mean of its divisors is an integer number (10671670506).

Almost surely, 2^21343341011 is an apocalyptic number.

21343341011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21343341011 is an equidigital number, since it uses as much as digits as its factorization.

21343341011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21343341011 its reverse (11014334312), we get a palindrome (32357675323).

The spelling of 21343341011 in words is "twenty-one billion, three hundred forty-three million, three hundred forty-one thousand, eleven".