13111331201 has 4 divisors (see below), whose sum is σ = 13563446100. Its totient is φ = 12659216304.

The previous prime is 13111331179. The next prime is 13111331213. The reversal of 13111331201 is 10213311131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9721762801 + 3389568400 = 98599^2 + 58220^2 .

It is a cyclic number.

It is not a de Polignac number, because 13111331201 - 2¹⁴ = 13111314817 is a prime.

It is a super-2 number, since 2×13111331201² (a number of 21 digits) contains 22 as substring.

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 13111331201.

It is not an unprimeable number, because it can be changed into a prime (13111331251) 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, 226057406 + ... + 226057463.

It is an arithmetic number, because the mean of its divisors is an integer number (3390861525).

Almost surely, 2^13111331201 is an apocalyptic number.

It is an amenable number.

13111331201 is a deficient number, since it is larger than the sum of its proper divisors (452114899).

13111331201 is an equidigital number, since it uses as much as digits as its factorization.

13111331201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452114898.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 13111331201 its reverse (10213311131), we get a palindrome (23324642332).

The spelling of 13111331201 in words is "thirteen billion, one hundred eleven million, three hundred thirty-one thousand, two hundred one".