21331230333203 has 4 divisors (see below), whose sum is σ = 24378548952240. Its totient is φ = 18283911714168.

The previous prime is 21331230333107. The next prime is 21331230333223. The reversal of 21331230333203 is 30233303213312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21331230333203 - 2¹⁴ = 21331230316819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21331230333223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1523659309508 + ... + 1523659309521.

It is an arithmetic number, because the mean of its divisors is an integer number (6094637238060).

Almost surely, 2^{21331230333203} is an apocalyptic number.

21331230333203 is a deficient number, since it is larger than the sum of its proper divisors (3047318619037).

21331230333203 is an equidigital number, since it uses as much as digits as its factorization.

21331230333203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047318619036.

The product of its (nonzero) digits is 17496, while the sum is 29.

Adding to 21331230333203 its reverse (30233303213312), we get a palindrome (51564533546515).

The spelling of 21331230333203 in words is "twenty-one trillion, three hundred thirty-one billion, two hundred thirty million, three hundred thirty-three thousand, two hundred three".