21211010003 has 2 divisors, whose sum is σ = 21211010004. Its totient is φ = 21211010002.

The previous prime is 21211009969. The next prime is 21211010027. The reversal of 21211010003 is 30001011212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21211010003 - 2¹⁰ = 21211008979 is a prime.

It is not a weakly prime, because it can be changed into another prime (21211010033) 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, 10605505001 + 10605505002.

It is an arithmetic number, because the mean of its divisors is an integer number (10605505002).

Almost surely, 2^21211010003 is an apocalyptic number.

21211010003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21211010003 is an equidigital number, since it uses as much as digits as its factorization.

21211010003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21211010003 its reverse (30001011212), we get a palindrome (51212021215).

The spelling of 21211010003 in words is "twenty-one billion, two hundred eleven million, ten thousand, three".