13221111211 has 8 divisors (see below), whose sum is σ = 16483463424. Its totient is φ = 10302164520.

The previous prime is 13221111193. The next prime is 13221111217. The reversal of 13221111211 is 11211112231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13221111211 - 2⁹ = 13221110699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13221111217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85851295 + ... + 85851448.

It is an arithmetic number, because the mean of its divisors is an integer number (2060432928).

Almost surely, 2^13221111211 is an apocalyptic number.

13221111211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13221111211 is a deficient number, since it is larger than the sum of its proper divisors (3262352213).

13221111211 is a wasteful number, since it uses less digits than its factorization.

13221111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171702761.

The product of its digits is 24, while the sum is 16.

Adding to 13221111211 its reverse (11211112231), we get a palindrome (24432223442).

The spelling of 13221111211 in words is "thirteen billion, two hundred twenty-one million, one hundred eleven thousand, two hundred eleven".