21211103003 has 2 divisors, whose sum is σ = 21211103004. Its totient is φ = 21211103002.

The previous prime is 21211102901. The next prime is 21211103051. The reversal of 21211103003 is 30030111212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21211103003 - 2¹⁴ = 21211086619 is a prime.

It is not a weakly prime, because it can be changed into another prime (21211103503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605551501 + 10605551502.

It is an arithmetic number, because the mean of its divisors is an integer number (10605551502).

Almost surely, 2^21211103003 is an apocalyptic number.

21211103003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21211103003 is an equidigital number, since it uses as much as digits as its factorization.

21211103003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21211103003 its reverse (30030111212), we get a palindrome (51241214215).

The spelling of 21211103003 in words is "twenty-one billion, two hundred eleven million, one hundred three thousand, three".