221166067063 has 2 divisors, whose sum is σ = 221166067064. Its totient is φ = 221166067062.

The previous prime is 221166067049. The next prime is 221166067081. The reversal of 221166067063 is 360760661122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221166067063 - 2²⁵ = 221132512631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221166067163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110583033531 + 110583033532.

It is an arithmetic number, because the mean of its divisors is an integer number (110583033532).

Almost surely, 2^221166067063 is an apocalyptic number.

221166067063 is a deficient number, since it is larger than the sum of its proper divisors (1).

221166067063 is an equidigital number, since it uses as much as digits as its factorization.

221166067063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 221166067063 in words is "two hundred twenty-one billion, one hundred sixty-six million, sixty-seven thousand, sixty-three".