13011111133 has 8 divisors (see below), whose sum is σ = 13089380216. Its totient is φ = 12933043200.

The previous prime is 13011111131. The next prime is 13011111151. The reversal of 13011111133 is 33111111031.

It can be written as a sum of positive squares in 4 ways, for example, as 2307553369 + 10703557764 = 48037^2 + 103458^2 .

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 13011111133 - 2¹ = 13011111131 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 (13011111131) 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, 80485 + ... + 180277.

It is an arithmetic number, because the mean of its divisors is an integer number (1636172527).

Almost surely, 2^13011111133 is an apocalyptic number.

It is an amenable number.

13011111133 is a deficient number, since it is larger than the sum of its proper divisors (78269083).

13011111133 is an equidigital number, since it uses as much as digits as its factorization.

13011111133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100575.

The product of its (nonzero) digits is 27, while the sum is 16.

Adding to 13011111133 its reverse (33111111031), we get a palindrome (46122222164).

The spelling of 13011111133 in words is "thirteen billion, eleven million, one hundred eleven thousand, one hundred thirty-three".