13223202121 has 2 divisors, whose sum is σ = 13223202122. Its totient is φ = 13223202120.

The previous prime is 13223202103. The next prime is 13223202137. The reversal of 13223202121 is 12120232231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13101320521 + 121881600 = 114461^2 + 11040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13223202121 is a prime.

It is not a weakly prime, because it can be changed into another prime (13223202101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6611601060 + 6611601061.

It is an arithmetic number, because the mean of its divisors is an integer number (6611601061).

Almost surely, 2^13223202121 is an apocalyptic number.

It is an amenable number.

13223202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13223202121 is an equidigital number, since it uses as much as digits as its factorization.

13223202121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13223202121 its reverse (12120232231), we get a palindrome (25343434352).

The spelling of 13223202121 in words is "thirteen billion, two hundred twenty-three million, two hundred two thousand, one hundred twenty-one".