123231120202171 has 2 divisors, whose sum is σ = 123231120202172. Its totient is φ = 123231120202170.

The previous prime is 123231120202109. The next prime is 123231120202259. The reversal of 123231120202171 is 171202021132321.

It is a weak prime.

It is an emirp because it is prime and its reverse (171202021132321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123231120202171 - 2²¹ = 123231118105019 is a prime.

It is a super-2 number, since 2×123231120202171² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123231120203171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61615560101085 + 61615560101086.

It is an arithmetic number, because the mean of its divisors is an integer number (61615560101086).

Almost surely, 2^{123231120202171} is an apocalyptic number.

123231120202171 is a deficient number, since it is larger than the sum of its proper divisors (1).

123231120202171 is an equidigital number, since it uses as much as digits as its factorization.

123231120202171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

Adding to 123231120202171 its reverse (171202021132321), we get a palindrome (294433141334492).

The spelling of 123231120202171 in words is "one hundred twenty-three trillion, two hundred thirty-one billion, one hundred twenty million, two hundred two thousand, one hundred seventy-one".