13242232181 has 2 divisors, whose sum is σ = 13242232182. Its totient is φ = 13242232180.

The previous prime is 13242232177. The next prime is 13242232279. The reversal of 13242232181 is 18123224231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13118266225 + 123965956 = 114535^2 + 11134^2 .

It is a cyclic number.

It is not a de Polignac number, because 13242232181 - 2² = 13242232177 is a prime.

It is a super-2 number, since 2×13242232181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13242292181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6621116090 + 6621116091.

It is an arithmetic number, because the mean of its divisors is an integer number (6621116091).

Almost surely, 2^13242232181 is an apocalyptic number.

It is an amenable number.

13242232181 is a deficient number, since it is larger than the sum of its proper divisors (1).

13242232181 is an equidigital number, since it uses as much as digits as its factorization.

13242232181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The spelling of 13242232181 in words is "thirteen billion, two hundred forty-two million, two hundred thirty-two thousand, one hundred eighty-one".