21112210003 has 2 divisors, whose sum is σ = 21112210004. Its totient is φ = 21112210002.

The previous prime is 21112209997. The next prime is 21112210013. The reversal of 21112210003 is 30001221112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21112210003 - 2²⁵ = 21078655571 is a prime.

It is a super-2 number, since 2×21112210003² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21112210013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556105001 + 10556105002.

It is an arithmetic number, because the mean of its divisors is an integer number (10556105002).

Almost surely, 2^21112210003 is an apocalyptic number.

21112210003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112210003 is an equidigital number, since it uses as much as digits as its factorization.

21112210003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21112210003 its reverse (30001221112), we get a palindrome (51113431115).

The spelling of 21112210003 in words is "twenty-one billion, one hundred twelve million, two hundred ten thousand, three".