13121003331211 has 4 divisors (see below), whose sum is σ = 13121015590800. Its totient is φ = 13120991071624.

The previous prime is 13121003331203. The next prime is 13121003331301. The reversal of 13121003331211 is 11213330012131.

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

It is a cyclic number.

It is not a de Polignac number, because 13121003331211 - 2³ = 13121003331203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121003331311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4352656 + ... + 6722173.

It is an arithmetic number, because the mean of its divisors is an integer number (3280253897700).

Almost surely, 2^{13121003331211} is an apocalyptic number.

13121003331211 is a deficient number, since it is larger than the sum of its proper divisors (12259589).

13121003331211 is a wasteful number, since it uses less digits than its factorization.

13121003331211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12259588.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 13121003331211 its reverse (11213330012131), we get a palindrome (24334333343342).

The spelling of 13121003331211 in words is "thirteen trillion, one hundred twenty-one billion, three million, three hundred thirty-one thousand, two hundred eleven".