13222121111 has 8 divisors (see below), whose sum is σ = 13255932480. Its totient is φ = 13188333312.

The previous prime is 13222121039. The next prime is 13222121117. The reversal of 13222121111 is 11112122231.

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 13222121111 - 2¹⁸ = 13221858967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13222121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222121117) 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, 1752395 + ... + 1759923.

It is an arithmetic number, because the mean of its divisors is an integer number (1656991560).

Almost surely, 2^13222121111 is an apocalyptic number.

13222121111 is a deficient number, since it is larger than the sum of its proper divisors (33811369).

13222121111 is an equidigital number, since it uses as much as digits as its factorization.

13222121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11785.

The product of its digits is 48, while the sum is 17.

Adding to 13222121111 its reverse (11112122231), we get a palindrome (24334243342).

The spelling of 13222121111 in words is "thirteen billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred eleven".