13222432021 has 2 divisors, whose sum is σ = 13222432022. Its totient is φ = 13222432020.

The previous prime is 13222432019. The next prime is 13222432037. The reversal of 13222432021 is 12023422231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10438708900 + 2783723121 = 102170^2 + 52761^2 .

It is a cyclic number.

It is not a de Polignac number, because 13222432021 - 2¹ = 13222432019 is a prime.

It is a super-2 number, since 2×13222432021² (a number of 21 digits) contains 22 as substring.

Together with 13222432019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13222431983 and 13222432001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13222432621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6611216010 + 6611216011.

It is an arithmetic number, because the mean of its divisors is an integer number (6611216011).

Almost surely, 2^13222432021 is an apocalyptic number.

It is an amenable number.

13222432021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13222432021 is an equidigital number, since it uses as much as digits as its factorization.

13222432021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 13222432021 its reverse (12023422231), we get a palindrome (25245854252).

The spelling of 13222432021 in words is "thirteen billion, two hundred twenty-two million, four hundred thirty-two thousand, twenty-one".