221123003 has 4 divisors (see below), whose sum is σ = 222607200. Its totient is φ = 219638808.

The previous prime is 221122991. The next prime is 221123011. The reversal of 221123003 is 300321122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221123003 - 2⁸ = 221122747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221123053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741875 + ... + 742172.

It is an arithmetic number, because the mean of its divisors is an integer number (55651800).

Almost surely, 2^221123003 is an apocalyptic number.

221123003 is a deficient number, since it is larger than the sum of its proper divisors (1484197).

221123003 is a wasteful number, since it uses less digits than its factorization.

221123003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484196.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 221123003 is about 14870.2052104199. The cubic root of 221123003 is about 604.7065060980.

Adding to 221123003 its reverse (300321122), we get a palindrome (521444125).

The spelling of 221123003 in words is "two hundred twenty-one million, one hundred twenty-three thousand, three".