13011220133 has 8 divisors (see below), whose sum is σ = 13159143576. Its totient is φ = 12863872000.

The previous prime is 13011220093. The next prime is 13011220141. The reversal of 13011220133 is 33102211031.

It can be written as a sum of positive squares in 4 ways, for example, as 4816082404 + 8195137729 = 69398^2 + 90527^2 .

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 13011220133 - 2¹⁴ = 13011203749 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 (13011220633) 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, 98258 + ... + 188883.

It is an arithmetic number, because the mean of its divisors is an integer number (1644892947).

Almost surely, 2^13011220133 is an apocalyptic number.

It is an amenable number.

13011220133 is a deficient number, since it is larger than the sum of its proper divisors (147923443).

13011220133 is a wasteful number, since it uses less digits than its factorization.

13011220133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287655.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13011220133 its reverse (33102211031), we get a palindrome (46113431164).

The spelling of 13011220133 in words is "thirteen billion, eleven million, two hundred twenty thousand, one hundred thirty-three".