201233021013 has 6 divisors (see below), whose sum is σ = 290669919254. Its totient is φ = 134155347336.

The previous prime is 201233020997. The next prime is 201233021021. The reversal of 201233021013 is 310120332102.

It can be written as a sum of positive squares in only one way, i.e., 168985122084 + 32247898929 = 411078^2 + 179577^2 .

It is not a de Polignac number, because 201233021013 - 2⁴ = 201233020997 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 (201233021413) 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, 11179612270 + ... + 11179612287.

Almost surely, 2^201233021013 is an apocalyptic number.

It is an amenable number.

201233021013 is a deficient number, since it is larger than the sum of its proper divisors (89436898241).

201233021013 is a wasteful number, since it uses less digits than its factorization.

201233021013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22359224563 (or 22359224560 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 201233021013 its reverse (310120332102), we get a palindrome (511353353115).

The spelling of 201233021013 in words is "two hundred one billion, two hundred thirty-three million, twenty-one thousand, thirteen".