13021121211299 has 4 divisors (see below), whose sum is σ = 13787069517864. Its totient is φ = 12255172904736.

The previous prime is 13021121211221. The next prime is 13021121211331. The reversal of 13021121211299 is 99211212112031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13021121211299 - 2³² = 13016826244003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13021121211199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382974153257 + ... + 382974153290.

It is an arithmetic number, because the mean of its divisors is an integer number (3446767379466).

Almost surely, 2^{13021121211299} is an apocalyptic number.

13021121211299 is a deficient number, since it is larger than the sum of its proper divisors (765948306565).

13021121211299 is an equidigital number, since it uses as much as digits as its factorization.

13021121211299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765948306564.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 13021121211299 in words is "thirteen trillion, twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, two hundred ninety-nine".