235212406252181 has 2 divisors, whose sum is σ = 235212406252182. Its totient is φ = 235212406252180.

The previous prime is 235212406252151. The next prime is 235212406252183. The reversal of 235212406252181 is 181252604212532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192062734168900 + 43149672083281 = 13858670^2 + 6568841^2 .

It is a cyclic number.

It is not a de Polignac number, because 235212406252181 - 2³⁸ = 234937528345237 is a prime.

It is a super-2 number, since 2×235212406252181² (a number of 30 digits) contains 22 as substring.

Together with 235212406252183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235212406252183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117606203126090 + 117606203126091.

It is an arithmetic number, because the mean of its divisors is an integer number (117606203126091).

Almost surely, 2^{235212406252181} is an apocalyptic number.

It is an amenable number.

235212406252181 is a deficient number, since it is larger than the sum of its proper divisors (1).

235212406252181 is an equidigital number, since it uses as much as digits as its factorization.

235212406252181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 235212406252181 in words is "two hundred thirty-five trillion, two hundred twelve billion, four hundred six million, two hundred fifty-two thousand, one hundred eighty-one".