221441053 has 2 divisors, whose sum is σ = 221441054. Its totient is φ = 221441052.

The previous prime is 221440981. The next prime is 221441057. The reversal of 221441053 is 350144122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117462244 + 103978809 = 10838^2 + 10197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221441053 is a prime.

It is a super-2 number, since 2×221441053² = 98072279907497618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221441057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110720526 + 110720527.

It is an arithmetic number, because the mean of its divisors is an integer number (110720527).

Almost surely, 2^221441053 is an apocalyptic number.

It is an amenable number.

221441053 is a deficient number, since it is larger than the sum of its proper divisors (1).

221441053 is an equidigital number, since it uses as much as digits as its factorization.

221441053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 221441053 is about 14880.8955711678. The cubic root of 221441053 is about 604.9962916695.

Adding to 221441053 its reverse (350144122), we get a palindrome (571585175).

The spelling of 221441053 in words is "two hundred twenty-one million, four hundred forty-one thousand, fifty-three".