221104901 has 2 divisors, whose sum is σ = 221104902. Its totient is φ = 221104900.

The previous prime is 221104867. The next prime is 221104909. The reversal of 221104901 is 109401122.

221104901 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., 168324676 + 52780225 = 12974^2 + 7265^2 .

It is a cyclic number.

It is not a de Polignac number, because 221104901 - 2⁶ = 221104837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221104909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110552450 + 110552451.

It is an arithmetic number, because the mean of its divisors is an integer number (110552451).

Almost surely, 2^221104901 is an apocalyptic number.

It is an amenable number.

221104901 is a deficient number, since it is larger than the sum of its proper divisors (1).

221104901 is an equidigital number, since it uses as much as digits as its factorization.

221104901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 221104901 is about 14869.5965311773. The cubic root of 221104901 is about 604.6900044289.

The spelling of 221104901 in words is "two hundred twenty-one million, one hundred four thousand, nine hundred one".