221094079016873 has 2 divisors, whose sum is σ = 221094079016874. Its totient is φ = 221094079016872.

The previous prime is 221094079016803. The next prime is 221094079016897. The reversal of 221094079016873 is 378610970490122.

221094079016873 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 can be written as a sum of positive squares in only one way, i.e., 217306279481344 + 3787799535529 = 14741312^2 + 1946227^2 .

It is a cyclic number.

It is not a de Polignac number, because 221094079016873 - 2¹⁴ = 221094079000489 is a prime.

It is not a weakly prime, because it can be changed into another prime (221094079016803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110547039508436 + 110547039508437.

It is an arithmetic number, because the mean of its divisors is an integer number (110547039508437).

Almost surely, 2^{221094079016873} is an apocalyptic number.

It is an amenable number.

221094079016873 is a deficient number, since it is larger than the sum of its proper divisors (1).

221094079016873 is an equidigital number, since it uses as much as digits as its factorization.

221094079016873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 221094079016873 in words is "two hundred twenty-one trillion, ninety-four billion, seventy-nine million, sixteen thousand, eight hundred seventy-three".