21331110203033 has 4 divisors (see below), whose sum is σ = 21538208360448. Its totient is φ = 21124012045620.

The previous prime is 21331110203027. The next prime is 21331110203071. The reversal of 21331110203033 is 33030201113312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21331110203033 - 2⁸ = 21331110202777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21331110263033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103549078553 + ... + 103549078758.

It is an arithmetic number, because the mean of its divisors is an integer number (5384552090112).

Almost surely, 2^{21331110203033} is an apocalyptic number.

It is an amenable number.

21331110203033 is a deficient number, since it is larger than the sum of its proper divisors (207098157415).

21331110203033 is a wasteful number, since it uses less digits than its factorization.

21331110203033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207098157414.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 21331110203033 its reverse (33030201113312), we get a palindrome (54361311316345).

The spelling of 21331110203033 in words is "twenty-one trillion, three hundred thirty-one billion, one hundred ten million, two hundred three thousand, thirty-three".