221141603 has 2 divisors, whose sum is σ = 221141604. Its totient is φ = 221141602.

The previous prime is 221141581. The next prime is 221141623. The reversal of 221141603 is 306141122.

It is an a-pointer prime, because the next prime (221141623) can be obtained adding 221141603 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221141603 - 2⁶ = 221141539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221141623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110570801 + 110570802.

It is an arithmetic number, because the mean of its divisors is an integer number (110570802).

Almost surely, 2^221141603 is an apocalyptic number.

221141603 is a deficient number, since it is larger than the sum of its proper divisors (1).

221141603 is an equidigital number, since it uses as much as digits as its factorization.

221141603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 221141603 is about 14870.8306089472. The cubic root of 221141603 is about 604.7234608027.

Adding to 221141603 its reverse (306141122), we get a palindrome (527282725).

The spelling of 221141603 in words is "two hundred twenty-one million, one hundred forty-one thousand, six hundred three".