13222023021 has 12 divisors (see below), whose sum is σ = 19128280860. Its totient is φ = 8800926720.

The previous prime is 13222023011. The next prime is 13222023077. The reversal of 13222023021 is 12032022231.

It can be written as a sum of positive squares in 2 ways, for example, as 10258853796 + 2963169225 = 101286^2 + 54435^2 .

It is not a de Polignac number, because 13222023021 - 2¹³ = 13222014829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13222022985 and 13222023003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222023011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1140186 + ... + 1151723.

It is an arithmetic number, because the mean of its divisors is an integer number (1594023405).

Almost surely, 2^13222023021 is an apocalyptic number.

It is an amenable number.

13222023021 is a deficient number, since it is larger than the sum of its proper divisors (5906257839).

13222023021 is a wasteful number, since it uses less digits than its factorization.

13222023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292556 (or 2292553 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 13222023021 its reverse (12032022231), we get a palindrome (25254045252).

The spelling of 13222023021 in words is "thirteen billion, two hundred twenty-two million, twenty-three thousand, twenty-one".