13222112021 has 2 divisors, whose sum is σ = 13222112022. Its totient is φ = 13222112020.

The previous prime is 13222112003. The next prime is 13222112041. The reversal of 13222112021 is 12021122231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13008543025 + 213568996 = 114055^2 + 14614^2 .

It is a cyclic number.

It is not a de Polignac number, because 13222112021 - 2¹⁸ = 13221849877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13222112041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6611056010 + 6611056011.

It is an arithmetic number, because the mean of its divisors is an integer number (6611056011).

Almost surely, 2^13222112021 is an apocalyptic number.

It is an amenable number.

13222112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13222112021 is an equidigital number, since it uses as much as digits as its factorization.

13222112021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 13222112021 its reverse (12021122231), we get a palindrome (25243234252).

The spelling of 13222112021 in words is "thirteen billion, two hundred twenty-two million, one hundred twelve thousand, twenty-one".