21033103230023 has 4 divisors (see below), whose sum is σ = 21033112623048. Its totient is φ = 21033093837000.

The previous prime is 21033103229969. The next prime is 21033103230031. The reversal of 21033103230023 is 32003230133012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21033103230023 - 2⁸ = 21033103229767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033103200023) 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, 830273 + ... + 6538773.

It is an arithmetic number, because the mean of its divisors is an integer number (5258278155762).

Almost surely, 2^{21033103230023} is an apocalyptic number.

21033103230023 is a deficient number, since it is larger than the sum of its proper divisors (9393025).

21033103230023 is an equidigital number, since it uses as much as digits as its factorization.

21033103230023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9393024.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21033103230023 its reverse (32003230133012), we get a palindrome (53036333363035).

The spelling of 21033103230023 in words is "twenty-one trillion, thirty-three billion, one hundred three million, two hundred thirty thousand, twenty-three".