215221442411 has 2 divisors, whose sum is σ = 215221442412. Its totient is φ = 215221442410.

The previous prime is 215221442357. The next prime is 215221442419. The reversal of 215221442411 is 114244122512.

215221442411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215221442411 - 2²⁶ = 215154333547 is a prime.

It is not a weakly prime, because it can be changed into another prime (215221442419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107610721205 + 107610721206.

It is an arithmetic number, because the mean of its divisors is an integer number (107610721206).

Almost surely, 2^215221442411 is an apocalyptic number.

215221442411 is a deficient number, since it is larger than the sum of its proper divisors (1).

215221442411 is an equidigital number, since it uses as much as digits as its factorization.

215221442411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5120, while the sum is 29.

Adding to 215221442411 its reverse (114244122512), we get a palindrome (329465564923).

The spelling of 215221442411 in words is "two hundred fifteen billion, two hundred twenty-one million, four hundred forty-two thousand, four hundred eleven".