13021311121 has 16 divisors (see below), whose sum is σ = 16028941824. Its totient is φ = 10300832064.

The previous prime is 13021311119. The next prime is 13021311167. The reversal of 13021311121 is 12111312031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13021311121 - 2¹ = 13021311119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13021311095 and 13021311104.

It is not an unprimeable number, because it can be changed into a prime (13021311101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 923295 + ... + 937291.

It is an arithmetic number, because the mean of its divisors is an integer number (1001808864).

Almost surely, 2^13021311121 is an apocalyptic number.

It is an amenable number.

13021311121 is a deficient number, since it is larger than the sum of its proper divisors (3007630703).

13021311121 is a wasteful number, since it uses less digits than its factorization.

13021311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24240.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13021311121 its reverse (12111312031), we get a palindrome (25132623152).

The spelling of 13021311121 in words is "thirteen billion, twenty-one million, three hundred eleven thousand, one hundred twenty-one".