21340001003 has 2 divisors, whose sum is σ = 21340001004. Its totient is φ = 21340001002.

The previous prime is 21340000939. The next prime is 21340001017. The reversal of 21340001003 is 30010004312.

It is an a-pointer prime, because the next prime (21340001017) can be obtained adding 21340001003 to its sum of digits (14).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21340001003 - 2⁶ = 21340000939 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21340001083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10670000501 + 10670000502.

It is an arithmetic number, because the mean of its divisors is an integer number (10670000502).

Almost surely, 2^21340001003 is an apocalyptic number.

21340001003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21340001003 is an equidigital number, since it uses as much as digits as its factorization.

21340001003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21340001003 its reverse (30010004312), we get a palindrome (51350005315).

The spelling of 21340001003 in words is "twenty-one billion, three hundred forty million, one thousand, three".