13320121111 has 4 divisors (see below), whose sum is σ = 14531041224. Its totient is φ = 12109201000.

The previous prime is 13320121099. The next prime is 13320121127. The reversal of 13320121111 is 11112102331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11112102331 = 11 ⋅1010191121.

It is a cyclic number.

It is not a de Polignac number, because 13320121111 - 2⁵ = 13320121079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320127111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605460040 + ... + 605460061.

It is an arithmetic number, because the mean of its divisors is an integer number (3632760306).

Almost surely, 2^13320121111 is an apocalyptic number.

13320121111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13320121111 is a deficient number, since it is larger than the sum of its proper divisors (1210920113).

13320121111 is a wasteful number, since it uses less digits than its factorization.

13320121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210920112.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13320121111 its reverse (11112102331), we get a palindrome (24432223442).

It can be divided in two parts, 13320 and 121111, that added together give a palindrome (134431).

The spelling of 13320121111 in words is "thirteen billion, three hundred twenty million, one hundred twenty-one thousand, one hundred eleven".