21410247203 has 2 divisors, whose sum is σ = 21410247204. Its totient is φ = 21410247202.

The previous prime is 21410247197. The next prime is 21410247277. The reversal of 21410247203 is 30274201412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21410247203 is a prime.

It is not a weakly prime, because it can be changed into another prime (21410247503) 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, 10705123601 + 10705123602.

It is an arithmetic number, because the mean of its divisors is an integer number (10705123602).

Almost surely, 2^21410247203 is an apocalyptic number.

21410247203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21410247203 is an equidigital number, since it uses as much as digits as its factorization.

21410247203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

Adding to 21410247203 its reverse (30274201412), we get a palindrome (51684448615).

The spelling of 21410247203 in words is "twenty-one billion, four hundred ten million, two hundred forty-seven thousand, two hundred three".