21323301033021 has 16 divisors (see below), whose sum is σ = 30622538890944. Its totient is φ = 13120117570944.

The previous prime is 21323301032977. The next prime is 21323301033031. The reversal of 21323301033021 is 12033010332312.

It is not a de Polignac number, because 21323301033021 - 2¹¹ = 21323301030973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21323301032982 and 21323301033000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323301033031) 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 15 ways as a sum of consecutive naturals, for example, 39600691 + ... + 40135536.

It is an arithmetic number, because the mean of its divisors is an integer number (1913908680684).

Almost surely, 2^{21323301033021} is an apocalyptic number.

It is an amenable number.

21323301033021 is a deficient number, since it is larger than the sum of its proper divisors (9299237857923).

21323301033021 is a wasteful number, since it uses less digits than its factorization.

21323301033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79743100.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21323301033021 its reverse (12033010332312), we get a palindrome (33356311365333).

The spelling of 21323301033021 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred one million, thirty-three thousand, twenty-one".