221200193 has 2 divisors, whose sum is σ = 221200194. Its totient is φ = 221200192.

The previous prime is 221200183. The next prime is 221200211. The reversal of 221200193 is 391002122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123921424 + 97278769 = 11132^2 + 9863^2 .

It is a cyclic number.

It is not a de Polignac number, because 221200193 - 2¹⁰ = 221199169 is a prime.

It is not a weakly prime, because it can be changed into another prime (221200123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600096 + 110600097.

It is an arithmetic number, because the mean of its divisors is an integer number (110600097).

Almost surely, 2^221200193 is an apocalyptic number.

It is an amenable number.

221200193 is a deficient number, since it is larger than the sum of its proper divisors (1).

221200193 is an equidigital number, since it uses as much as digits as its factorization.

221200193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 221200193 is about 14872.8004424184. The cubic root of 221200193 is about 604.7768619094.

The spelling of 221200193 in words is "two hundred twenty-one million, two hundred thousand, one hundred ninety-three".