221021102200189 has 2 divisors, whose sum is σ = 221021102200190. Its totient is φ = 221021102200188.

The previous prime is 221021102200081. The next prime is 221021102200237. The reversal of 221021102200189 is 981002201120122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195152098999225 + 25869003200964 = 13969685^2 + 5086158^2 .

It is a cyclic number.

It is not a de Polignac number, because 221021102200189 - 2⁷ = 221021102200061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221021102200189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221021102900189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510551100094 + 110510551100095.

It is an arithmetic number, because the mean of its divisors is an integer number (110510551100095).

Almost surely, 2^{221021102200189} is an apocalyptic number.

It is an amenable number.

221021102200189 is a deficient number, since it is larger than the sum of its proper divisors (1).

221021102200189 is an equidigital number, since it uses as much as digits as its factorization.

221021102200189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 221021102200189 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred two million, two hundred thousand, one hundred eighty-nine".