20033040121 has 2 divisors, whose sum is σ = 20033040122. Its totient is φ = 20033040120.

The previous prime is 20033040113. The next prime is 20033040161. The reversal of 20033040121 is 12104033002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19373577721 + 659462400 = 139189^2 + 25680^2 .

It is a cyclic number.

It is not a de Polignac number, because 20033040121 - 2³ = 20033040113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20033040095 and 20033040104.

It is not a weakly prime, because it can be changed into another prime (20033040101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10016520060 + 10016520061.

It is an arithmetic number, because the mean of its divisors is an integer number (10016520061).

Almost surely, 2^20033040121 is an apocalyptic number.

It is an amenable number.

20033040121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20033040121 is an equidigital number, since it uses as much as digits as its factorization.

20033040121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20033040121 its reverse (12104033002), we get a palindrome (32137073123).

The spelling of 20033040121 in words is "twenty billion, thirty-three million, forty thousand, one hundred twenty-one".