20123232271 has 2 divisors, whose sum is σ = 20123232272. Its totient is φ = 20123232270.

The previous prime is 20123232257. The next prime is 20123232281. The reversal of 20123232271 is 17223232102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20123232271 - 2²¹ = 20121135119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123232221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061616135 + 10061616136.

It is an arithmetic number, because the mean of its divisors is an integer number (10061616136).

Almost surely, 2^20123232271 is an apocalyptic number.

20123232271 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123232271 is an equidigital number, since it uses as much as digits as its factorization.

20123232271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 20123232271 its reverse (17223232102), we get a palindrome (37346464373).

The spelling of 20123232271 in words is "twenty billion, one hundred twenty-three million, two hundred thirty-two thousand, two hundred seventy-one".