221241349 has 12 divisors (see below), whose sum is σ = 268597984. Its totient is φ = 178478784.

The previous prime is 221241341. The next prime is 221241353. The reversal of 221241349 is 943142122.

It is not a de Polignac number, because 221241349 - 2³ = 221241341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221241341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52659 + ... + 56704.

Almost surely, 2^221241349 is an apocalyptic number.

It is an amenable number.

221241349 is a deficient number, since it is larger than the sum of its proper divisors (47356635).

221241349 is a wasteful number, since it uses less digits than its factorization.

221241349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109404 (or 109387 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 221241349 is about 14874.1839776171. The cubic root of 221241349 is about 604.8143673815.

The spelling of 221241349 in words is "two hundred twenty-one million, two hundred forty-one thousand, three hundred forty-nine".