13333111121 has 6 divisors (see below), whose sum is σ = 14655403266. Its totient is φ = 12121010000.

The previous prime is 13333111117. The next prime is 13333111133. The reversal of 13333111121 is 12111133331.

It can be written as a sum of positive squares in only one way, i.e., 12839382721 + 493728400 = 113311^2 + 22220^2 .

It is not a de Polignac number, because 13333111121 - 2² = 13333111117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13333111093 and 13333111102.

It is not an unprimeable number, because it can be changed into a prime (13333111111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55095380 + ... + 55095621.

It is an arithmetic number, because the mean of its divisors is an integer number (2442567211).

Almost surely, 2^13333111121 is an apocalyptic number.

13333111121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13333111121 is a deficient number, since it is larger than the sum of its proper divisors (1322292145).

13333111121 is a wasteful number, since it uses less digits than its factorization.

13333111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110191023 (or 110191012 counting only the distinct ones).

The product of its digits is 162, while the sum is 20.

Adding to 13333111121 its reverse (12111133331), we get a palindrome (25444244452).

The spelling of 13333111121 in words is "thirteen billion, three hundred thirty-three million, one hundred eleven thousand, one hundred twenty-one".