13223201121 has 12 divisors (see below), whose sum is σ = 20569424148. Its totient is φ = 8137354464.

The previous prime is 13223201119. The next prime is 13223201143. The reversal of 13223201121 is 12110232231.

13223201121 is a `hidden beast` number, since 1 + 322 + 320 + 1 + 1 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2791642896 + 10431558225 = 52836^2 + 102135^2 .

It is not a de Polignac number, because 13223201121 - 2¹ = 13223201119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13223201094 and 13223201103.

It is not an unprimeable number, because it can be changed into a prime (13223201161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56509290 + ... + 56509523.

It is an arithmetic number, because the mean of its divisors is an integer number (1714118679).

Almost surely, 2^13223201121 is an apocalyptic number.

It is an amenable number.

13223201121 is a deficient number, since it is larger than the sum of its proper divisors (7346223027).

13223201121 is a wasteful number, since it uses less digits than its factorization.

13223201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113018832 (or 113018829 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13223201121 its reverse (12110232231), we get a palindrome (25333433352).

The spelling of 13223201121 in words is "thirteen billion, two hundred twenty-three million, two hundred one thousand, one hundred twenty-one".