21113024033 has 2 divisors, whose sum is σ = 21113024034. Its totient is φ = 21113024032.

The previous prime is 21113024003. The next prime is 21113024099. The reversal of 21113024033 is 33042031112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14633257024 + 6479767009 = 120968^2 + 80497^2 .

It is a cyclic number.

It is not a de Polignac number, because 21113024033 - 2⁶ = 21113023969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21113023996 and 21113024014.

It is not a weakly prime, because it can be changed into another prime (21113024003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556512016 + 10556512017.

It is an arithmetic number, because the mean of its divisors is an integer number (10556512017).

Almost surely, 2^21113024033 is an apocalyptic number.

It is an amenable number.

21113024033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21113024033 is an equidigital number, since it uses as much as digits as its factorization.

21113024033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21113024033 its reverse (33042031112), we get a palindrome (54155055145).

The spelling of 21113024033 in words is "twenty-one billion, one hundred thirteen million, twenty-four thousand, thirty-three".