20433130121 has 8 divisors (see below), whose sum is σ = 20820852360. Its totient is φ = 20045489152.

The previous prime is 20433130087. The next prime is 20433130169. The reversal of 20433130121 is 12103133402.

It can be written as a sum of positive squares in 4 ways, for example, as 4966725625 + 15466404496 = 70475^2 + 124364^2 .

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 20433130121 - 2³⁰ = 19359388297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20433130093 and 20433130102.

It is not an unprimeable number, because it can be changed into a prime (20433132121) 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, 791465 + ... + 816873.

It is an arithmetic number, because the mean of its divisors is an integer number (2602606545).

Almost surely, 2^20433130121 is an apocalyptic number.

It is an amenable number.

20433130121 is a deficient number, since it is larger than the sum of its proper divisors (387722239).

20433130121 is a wasteful number, since it uses less digits than its factorization.

20433130121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40635.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20433130121 its reverse (12103133402), we get a palindrome (32536263523).

The spelling of 20433130121 in words is "twenty billion, four hundred thirty-three million, one hundred thirty thousand, one hundred twenty-one".