221053203 has 48 divisors (see below), whose sum is σ = 375350976. Its totient is φ = 122757120.

The previous prime is 221053169. The next prime is 221053211. The reversal of 221053203 is 302350122.

It is not a de Polignac number, because 221053203 - 2¹⁶ = 220987667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221053213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 372475 + ... + 373067.

It is an arithmetic number, because the mean of its divisors is an integer number (7819812).

Almost surely, 2^221053203 is an apocalyptic number.

221053203 is a deficient number, since it is larger than the sum of its proper divisors (154297773).

221053203 is a wasteful number, since it uses less digits than its factorization.

221053203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 221053203 is about 14867.8580501698. The cubic root of 221053203 is about 604.6428718982.

The spelling of 221053203 in words is "two hundred twenty-one million, fifty-three thousand, two hundred three".