13233220111 has 4 divisors (see below), whose sum is σ = 13929705400. Its totient is φ = 12536734824.

The previous prime is 13233220103. The next prime is 13233220129. The reversal of 13233220111 is 11102233231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13233220111 - 2³ = 13233220103 is a prime.

It is a super-2 number, since 2×13233220111² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 696485269 = 13233220111 / (1 + 3 + 2 + 3 + 3 + 2 + 2 + 0 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13233220141) 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, 348242616 + ... + 348242653.

It is an arithmetic number, because the mean of its divisors is an integer number (3482426350).

Almost surely, 2^13233220111 is an apocalyptic number.

13233220111 is a deficient number, since it is larger than the sum of its proper divisors (696485289).

13233220111 is an equidigital number, since it uses as much as digits as its factorization.

13233220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696485288.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13233220111 its reverse (11102233231), we get a palindrome (24335453342).

The spelling of 13233220111 in words is "thirteen billion, two hundred thirty-three million, two hundred twenty thousand, one hundred eleven".