221300032003 has 4 divisors (see below), whose sum is σ = 221693105448. Its totient is φ = 220906958560.

The previous prime is 221300031961. The next prime is 221300032027. The reversal of 221300032003 is 300230003122.

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 221300032003 - 2²⁵ = 221266477571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221300032403) 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 3 ways as a sum of consecutive naturals, for example, 196535878 + ... + 196537003.

It is an arithmetic number, because the mean of its divisors is an integer number (55423276362).

Almost surely, 2^221300032003 is an apocalyptic number.

221300032003 is a deficient number, since it is larger than the sum of its proper divisors (393073445).

221300032003 is an equidigital number, since it uses as much as digits as its factorization.

221300032003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393073444.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 221300032003 its reverse (300230003122), we get a palindrome (521530035125).

The spelling of 221300032003 in words is "two hundred twenty-one billion, three hundred million, thirty-two thousand, three".