21023231122033 has 4 divisors (see below), whose sum is σ = 24026549853760. Its totient is φ = 18019912390308.

The previous prime is 21023231122027. The next prime is 21023231122087. The reversal of 21023231122033 is 33022113232012.

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 21023231122033 - 2²⁹ = 21022694251121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21023231121989 and 21023231122007.

It is not an unprimeable number, because it can be changed into a prime (21023231125033) 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, 1501659365853 + ... + 1501659365866.

It is an arithmetic number, because the mean of its divisors is an integer number (6006637463440).

Almost surely, 2^{21023231122033} is an apocalyptic number.

It is an amenable number.

21023231122033 is a deficient number, since it is larger than the sum of its proper divisors (3003318731727).

21023231122033 is an equidigital number, since it uses as much as digits as its factorization.

21023231122033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003318731726.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21023231122033 its reverse (33022113232012), we get a palindrome (54045344354045).

The spelling of 21023231122033 in words is "twenty-one trillion, twenty-three billion, two hundred thirty-one million, one hundred twenty-two thousand, thirty-three".