13223311121 has 4 divisors (see below), whose sum is σ = 13224374592. Its totient is φ = 13222247652.

The previous prime is 13223311111. The next prime is 13223311141. The reversal of 13223311121 is 12111332231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13223311121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13223311093 and 13223311102.

It is not an unprimeable number, because it can be changed into a prime (13223311111) 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, 512861 + ... + 538026.

It is an arithmetic number, because the mean of its divisors is an integer number (3306093648).

Almost surely, 2^13223311121 is an apocalyptic number.

It is an amenable number.

13223311121 is a deficient number, since it is larger than the sum of its proper divisors (1063471).

13223311121 is a wasteful number, since it uses less digits than its factorization.

13223311121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063470.

The product of its digits is 216, while the sum is 20.

Adding to 13223311121 its reverse (12111332231), we get a palindrome (25334643352).

The spelling of 13223311121 in words is "thirteen billion, two hundred twenty-three million, three hundred eleven thousand, one hundred twenty-one".