13121311101999 has 8 divisors (see below), whose sum is σ = 17506375911600. Its totient is φ = 8741893513536.

The previous prime is 13121311101991. The next prime is 13121311102013. The reversal of 13121311101999 is 99910111312131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13121311101999 - 2³ = 13121311101991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13121311101999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121311101991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1411799862 + ... + 1411809155.

It is an arithmetic number, because the mean of its divisors is an integer number (2188296988950).

Almost surely, 2^{13121311101999} is an apocalyptic number.

13121311101999 is a deficient number, since it is larger than the sum of its proper divisors (4385064809601).

13121311101999 is a wasteful number, since it uses less digits than its factorization.

13121311101999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823610569.

The product of its (nonzero) digits is 13122, while the sum is 42.

The spelling of 13121311101999 in words is "thirteen trillion, one hundred twenty-one billion, three hundred eleven million, one hundred one thousand, nine hundred ninety-nine".