221104133 has 2 divisors, whose sum is σ = 221104134. Its totient is φ = 221104132.

The previous prime is 221104127. The next prime is 221104171. The reversal of 221104133 is 331401122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220908769 + 195364 = 14863^2 + 442^2 .

It is a cyclic number.

It is not a de Polignac number, because 221104133 - 2⁶ = 221104069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221104633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110552066 + 110552067.

It is an arithmetic number, because the mean of its divisors is an integer number (110552067).

Almost surely, 2^221104133 is an apocalyptic number.

It is an amenable number.

221104133 is a deficient number, since it is larger than the sum of its proper divisors (1).

221104133 is an equidigital number, since it uses as much as digits as its factorization.

221104133 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 17.

The square root of 221104133 is about 14869.5707066479. The cubic root of 221104133 is about 604.6893043050.

Adding to 221104133 its reverse (331401122), we get a palindrome (552505255).

The spelling of 221104133 in words is "two hundred twenty-one million, one hundred four thousand, one hundred thirty-three".