21023103110033 has 4 divisors (see below), whose sum is σ = 21047577037680. Its totient is φ = 20998629182388.

The previous prime is 21023103110021. The next prime is 21023103110063. The reversal of 21023103110033 is 33001130132012.

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 21023103110033 - 2⁸ = 21023103109777 is a prime.

It is a super-2 number, since 2×21023103110033² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21023103109987 and 21023103110014.

It is not an unprimeable number, because it can be changed into a prime (21023103110063) 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, 12236962535 + ... + 12236964252.

It is an arithmetic number, because the mean of its divisors is an integer number (5261894259420).

Almost surely, 2^{21023103110033} is an apocalyptic number.

It is an amenable number.

21023103110033 is a deficient number, since it is larger than the sum of its proper divisors (24473927647).

21023103110033 is an equidigital number, since it uses as much as digits as its factorization.

21023103110033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24473927646.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21023103110033 its reverse (33001130132012), we get a palindrome (54024233242045).

The spelling of 21023103110033 in words is "twenty-one trillion, twenty-three billion, one hundred three million, one hundred ten thousand, thirty-three".