21341004403 has 2 divisors, whose sum is σ = 21341004404. Its totient is φ = 21341004402.

The previous prime is 21341004389. The next prime is 21341004409. The reversal of 21341004403 is 30440014312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21341004403 - 2²⁵ = 21307449971 is a prime.

It is not a weakly prime, because it can be changed into another prime (21341004409) 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, 10670502201 + 10670502202.

It is an arithmetic number, because the mean of its divisors is an integer number (10670502202).

Almost surely, 2^21341004403 is an apocalyptic number.

21341004403 is a deficient number, since it is larger than the sum of its proper divisors (1).

21341004403 is an equidigital number, since it uses as much as digits as its factorization.

21341004403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21341004403 its reverse (30440014312), we get a palindrome (51781018715).

Subtracting 21341004403 from its reverse (30440014312), we obtain a palindrome (9099009909).

The spelling of 21341004403 in words is "twenty-one billion, three hundred forty-one million, four thousand, four hundred three".