13021232993 has 2 divisors, whose sum is σ = 13021232994. Its totient is φ = 13021232992.

The previous prime is 13021232989. The next prime is 13021233037. The reversal of 13021232993 is 39923212031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11659032529 + 1362200464 = 107977^2 + 36908^2 .

It is a cyclic number.

It is not a de Polignac number, because 13021232993 - 2² = 13021232989 is a prime.

It is not a weakly prime, because it can be changed into another prime (13021232593) 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, 6510616496 + 6510616497.

It is an arithmetic number, because the mean of its divisors is an integer number (6510616497).

Almost surely, 2^13021232993 is an apocalyptic number.

It is an amenable number.

13021232993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13021232993 is an equidigital number, since it uses as much as digits as its factorization.

13021232993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The spelling of 13021232993 in words is "thirteen billion, twenty-one million, two hundred thirty-two thousand, nine hundred ninety-three".