221130003 has 4 divisors (see below), whose sum is σ = 294840008. Its totient is φ = 147420000.

The previous prime is 221130001. The next prime is 221130031. The reversal of 221130003 is 300031122.

It is a happy number.

221130003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221130003 - 2¹ = 221130001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221130001) 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, 36854998 + ... + 36855003.

It is an arithmetic number, because the mean of its divisors is an integer number (73710002).

Almost surely, 2^221130003 is an apocalyptic number.

221130003 is a deficient number, since it is larger than the sum of its proper divisors (73710005).

221130003 is an equidigital number, since it uses as much as digits as its factorization.

221130003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73710004.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 221130003 is about 14870.4405785437. The cubic root of 221130003 is about 604.7128870125.

Adding to 221130003 its reverse (300031122), we get a palindrome (521161125).

The spelling of 221130003 in words is "two hundred twenty-one million, one hundred thirty thousand, three".