215366321041 has 2 divisors, whose sum is σ = 215366321042. Its totient is φ = 215366321040.

The previous prime is 215366321029. The next prime is 215366321081. The reversal of 215366321041 is 140123663512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202536001600 + 12830319441 = 450040^2 + 113271^2 .

It is a cyclic number.

It is not a de Polignac number, because 215366321041 - 2¹⁹ = 215365796753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215366320988 and 215366321006.

It is not a weakly prime, because it can be changed into another prime (215366321081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107683160520 + 107683160521.

It is an arithmetic number, because the mean of its divisors is an integer number (107683160521).

Almost surely, 2^215366321041 is an apocalyptic number.

It is an amenable number.

215366321041 is a deficient number, since it is larger than the sum of its proper divisors (1).

215366321041 is an equidigital number, since it uses as much as digits as its factorization.

215366321041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 215366321041 its reverse (140123663512), we get a palindrome (355489984553).

The spelling of 215366321041 in words is "two hundred fifteen billion, three hundred sixty-six million, three hundred twenty-one thousand, forty-one".