13321229851 has 2 divisors, whose sum is σ = 13321229852. Its totient is φ = 13321229850.

The previous prime is 13321229839. The next prime is 13321229921. The reversal of 13321229851 is 15892212331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13321229851 - 2²¹ = 13319132699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13321229851.

It is not a weakly prime, because it can be changed into another prime (13321229351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660614925 + 6660614926.

It is an arithmetic number, because the mean of its divisors is an integer number (6660614926).

Almost surely, 2^13321229851 is an apocalyptic number.

13321229851 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321229851 is an equidigital number, since it uses as much as digits as its factorization.

13321229851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The spelling of 13321229851 in words is "thirteen billion, three hundred twenty-one million, two hundred twenty-nine thousand, eight hundred fifty-one".