13021221119887 has 2 divisors, whose sum is σ = 13021221119888. Its totient is φ = 13021221119886.

The previous prime is 13021221119747. The next prime is 13021221120073. The reversal of 13021221119887 is 78891112212031.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13021221119887 is a prime.

It is a super-3 number, since 3×13021221119887³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13021221119087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510610559943 + 6510610559944.

It is an arithmetic number, because the mean of its divisors is an integer number (6510610559944).

Almost surely, 2^{13021221119887} is an apocalyptic number.

13021221119887 is a deficient number, since it is larger than the sum of its proper divisors (1).

13021221119887 is an equidigital number, since it uses as much as digits as its factorization.

13021221119887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 46.

The spelling of 13021221119887 in words is "thirteen trillion, twenty-one billion, two hundred twenty-one million, one hundred nineteen thousand, eight hundred eighty-seven".