214240433521 has 2 divisors, whose sum is σ = 214240433522. Its totient is φ = 214240433520.

The previous prime is 214240433431. The next prime is 214240433573. The reversal of 214240433521 is 125334042412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154477297296 + 59763136225 = 393036^2 + 244465^2 .

It is a cyclic number.

It is not a de Polignac number, because 214240433521 - 2⁹ = 214240433009 is a prime.

It is not a weakly prime, because it can be changed into another prime (214240433581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107120216760 + 107120216761.

It is an arithmetic number, because the mean of its divisors is an integer number (107120216761).

Almost surely, 2^214240433521 is an apocalyptic number.

It is an amenable number.

214240433521 is a deficient number, since it is larger than the sum of its proper divisors (1).

214240433521 is an equidigital number, since it uses as much as digits as its factorization.

214240433521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 214240433521 its reverse (125334042412), we get a palindrome (339574475933).

The spelling of 214240433521 in words is "two hundred fourteen billion, two hundred forty million, four hundred thirty-three thousand, five hundred twenty-one".