221343201 has 12 divisors (see below), whose sum is σ = 320566480. Its totient is φ = 147170520.

The previous prime is 221343173. The next prime is 221343251. The reversal of 221343201 is 102343122.

It is not a de Polignac number, because 221343201 - 2¹⁴ = 221326817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221343251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29035 + ... + 35856.

Almost surely, 2^221343201 is an apocalyptic number.

It is an amenable number.

221343201 is a deficient number, since it is larger than the sum of its proper divisors (99223279).

221343201 is a wasteful number, since it uses less digits than its factorization.

221343201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65276 (or 65273 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 221343201 is about 14877.6073681221. The cubic root of 221343201 is about 604.9071651377.

Adding to 221343201 its reverse (102343122), we get a palindrome (323686323).

The spelling of 221343201 in words is "two hundred twenty-one million, three hundred forty-three thousand, two hundred one".