13121333133211 has 16 divisors (see below), whose sum is σ = 14110853723136. Its totient is φ = 12156268646016.

The previous prime is 13121333133169. The next prime is 13121333133221. The reversal of 13121333133211 is 11233133312131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13121333133211 - 2²³ = 13121324744603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13121333133211.

It is not an unprimeable number, because it can be changed into a prime (13121333133221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2656611 + ... + 5770636.

It is an arithmetic number, because the mean of its divisors is an integer number (881928357696).

Almost surely, 2^{13121333133211} is an apocalyptic number.

13121333133211 is a deficient number, since it is larger than the sum of its proper divisors (989520589925).

13121333133211 is a wasteful number, since it uses less digits than its factorization.

13121333133211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8428698.

The product of its digits is 2916, while the sum is 28.

Adding to 13121333133211 its reverse (11233133312131), we get a palindrome (24354466445342).

The spelling of 13121333133211 in words is "thirteen trillion, one hundred twenty-one billion, three hundred thirty-three million, one hundred thirty-three thousand, two hundred eleven".