21011110030003 has 2 divisors, whose sum is σ = 21011110030004. Its totient is φ = 21011110030002.

The previous prime is 21011110029977. The next prime is 21011110030021. The reversal of 21011110030003 is 30003001111012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21011110030003 - 2¹⁷ = 21011109898931 is a prime.

It is not a weakly prime, because it can be changed into another prime (21011110030033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505555015001 + 10505555015002.

It is an arithmetic number, because the mean of its divisors is an integer number (10505555015002).

Almost surely, 2^{21011110030003} is an apocalyptic number.

21011110030003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21011110030003 is an equidigital number, since it uses as much as digits as its factorization.

21011110030003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 21011110030003 its reverse (30003001111012), we get a palindrome (51014111141015).

The spelling of 21011110030003 in words is "twenty-one trillion, eleven billion, one hundred ten million, thirty thousand, three".