20003122321033 has 4 divisors (see below), whose sum is σ = 20003140453140. Its totient is φ = 20003104188928.

The previous prime is 20003122321003. The next prime is 20003122321093. The reversal of 20003122321033 is 33012322130002.

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 18969744352329 + 1033377968704 = 4355427^2 + 1016552^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003122321033 - 2⁹ = 20003122320521 is a prime.

It is a super-2 number, since 2×20003122321033² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20003122320995 and 20003122321013.

It is not an unprimeable number, because it can be changed into a prime (20003122321003) 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, 7296088 + ... + 9656041.

It is an arithmetic number, because the mean of its divisors is an integer number (5000785113285).

Almost surely, 2^{20003122321033} is an apocalyptic number.

It is an amenable number.

20003122321033 is a deficient number, since it is larger than the sum of its proper divisors (18132107).

20003122321033 is a wasteful number, since it uses less digits than its factorization.

20003122321033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18132106.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20003122321033 its reverse (33012322130002), we get a palindrome (53015444451035).

The spelling of 20003122321033 in words is "twenty trillion, three billion, one hundred twenty-two million, three hundred twenty-one thousand, thirty-three".