21233030011 has 2 divisors, whose sum is σ = 21233030012. Its totient is φ = 21233030010.

The previous prime is 21233030003. The next prime is 21233030033. The reversal of 21233030011 is 11003033212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21233030011 - 2³ = 21233030003 is a prime.

It is not a weakly prime, because it can be changed into another prime (21233030711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616515005 + 10616515006.

It is an arithmetic number, because the mean of its divisors is an integer number (10616515006).

Almost surely, 2^21233030011 is an apocalyptic number.

21233030011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233030011 is an equidigital number, since it uses as much as digits as its factorization.

21233030011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21233030011 its reverse (11003033212), we get a palindrome (32236063223).

The spelling of 21233030011 in words is "twenty-one billion, two hundred thirty-three million, thirty thousand, eleven".