20013223033 has 8 divisors (see below), whose sum is σ = 20127973320. Its totient is φ = 19898519040.

The previous prime is 20013223001. The next prime is 20013223057. The reversal of 20013223033 is 33032231002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1147651129 + 18865571904 = 33877^2 + 137352^2 .

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 20013223033 - 2⁵ = 20013223001 is a prime.

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 20013223033.

It is not an unprimeable number, because it can be changed into a prime (20013223063) 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, 1235241 + ... + 1251337.

It is an arithmetic number, because the mean of its divisors is an integer number (2515996665).

Almost surely, 2^20013223033 is an apocalyptic number.

It is an amenable number.

20013223033 is a deficient number, since it is larger than the sum of its proper divisors (114750287).

20013223033 is a wasteful number, since it uses less digits than its factorization.

20013223033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23147.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20013223033 its reverse (33032231002), we get a palindrome (53045454035).

The spelling of 20013223033 in words is "twenty billion, thirteen million, two hundred twenty-three thousand, thirty-three".