12428206181 has 2 divisors, whose sum is σ = 12428206182. Its totient is φ = 12428206180.

The previous prime is 12428206159. The next prime is 12428206229. The reversal of 12428206181 is 18160282421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12411965281 + 16240900 = 111409^2 + 4030^2 .

It is a cyclic number.

It is not a de Polignac number, because 12428206181 - 2⁶ = 12428206117 is a prime.

It is a super-2 number, since 2×12428206181² (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 (12428206081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6214103090 + 6214103091.

It is an arithmetic number, because the mean of its divisors is an integer number (6214103091).

Almost surely, 2^12428206181 is an apocalyptic number.

It is an amenable number.

12428206181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12428206181 is an equidigital number, since it uses as much as digits as its factorization.

12428206181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 35.

The spelling of 12428206181 in words is "twelve billion, four hundred twenty-eight million, two hundred six thousand, one hundred eighty-one".