21322013033 has 4 divisors (see below), whose sum is σ = 21322593360. Its totient is φ = 21321432708.

The previous prime is 21322013029. The next prime is 21322013039. The reversal of 21322013033 is 33031022312.

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 21322013033 - 2² = 21322013029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21322012996 and 21322013014.

It is not an unprimeable number, because it can be changed into a prime (21322013039) 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, 231035 + ... + 309872.

It is an arithmetic number, because the mean of its divisors is an integer number (5330648340).

Almost surely, 2^21322013033 is an apocalyptic number.

It is an amenable number.

21322013033 is a deficient number, since it is larger than the sum of its proper divisors (580327).

21322013033 is an equidigital number, since it uses as much as digits as its factorization.

21322013033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580326.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21322013033 its reverse (33031022312), we get a palindrome (54353035345).

The spelling of 21322013033 in words is "twenty-one billion, three hundred twenty-two million, thirteen thousand, thirty-three".