20033120171 has 2 divisors, whose sum is σ = 20033120172. Its totient is φ = 20033120170.

The previous prime is 20033120113. The next prime is 20033120183. The reversal of 20033120171 is 17102133002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20033120171 - 2³⁴ = 2853250987 is a prime.

It is not a weakly prime, because it can be changed into another prime (20033320171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10016560085 + 10016560086.

It is an arithmetic number, because the mean of its divisors is an integer number (10016560086).

Almost surely, 2^20033120171 is an apocalyptic number.

20033120171 is a deficient number, since it is larger than the sum of its proper divisors (1).

20033120171 is an equidigital number, since it uses as much as digits as its factorization.

20033120171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

Adding to 20033120171 its reverse (17102133002), we get a palindrome (37135253173).

The spelling of 20033120171 in words is "twenty billion, thirty-three million, one hundred twenty thousand, one hundred seventy-one".