11001801033 has 6 divisors (see below), whose sum is σ = 15891490394. Its totient is φ = 7334534016.

The previous prime is 11001800993. The next prime is 11001801043. The reversal of 11001801033 is 33010810011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10311793209 + 690007824 = 101547^2 + 26268^2 .

It is not a de Polignac number, because 11001801033 - 2¹² = 11001796937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11001800997 and 11001801015.

It is not an unprimeable number, because it can be changed into a prime (11001801043) 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, 611211160 + ... + 611211177.

Almost surely, 2^11001801033 is an apocalyptic number.

It is an amenable number.

11001801033 is a deficient number, since it is larger than the sum of its proper divisors (4889689361).

11001801033 is a wasteful number, since it uses less digits than its factorization.

11001801033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222422343 (or 1222422340 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 11001801033 in words is "eleven billion, one million, eight hundred one thousand, thirty-three".