13121223343 has 2 divisors, whose sum is σ = 13121223344. Its totient is φ = 13121223342.

The previous prime is 13121223331. The next prime is 13121223413. The reversal of 13121223343 is 34332212131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13121223343 - 2²¹ = 13119126191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13121223443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560611671 + 6560611672.

It is an arithmetic number, because the mean of its divisors is an integer number (6560611672).

Almost surely, 2^13121223343 is an apocalyptic number.

13121223343 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121223343 is an equidigital number, since it uses as much as digits as its factorization.

13121223343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 25.

Adding to 13121223343 its reverse (34332212131), we get a palindrome (47453435474).

The spelling of 13121223343 in words is "thirteen billion, one hundred twenty-one million, two hundred twenty-three thousand, three hundred forty-three".