221000022003 has 4 divisors (see below), whose sum is σ = 294666696008. Its totient is φ = 147333348000.

The previous prime is 221000021993. The next prime is 221000022017. The reversal of 221000022003 is 300220000122.

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

It is not a de Polignac number, because 221000022003 - 2⁶ = 221000021939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221000022003.

It is not an unprimeable number, because it can be changed into a prime (221000022073) 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, 36833336998 + ... + 36833337003.

It is an arithmetic number, because the mean of its divisors is an integer number (73666674002).

Almost surely, 2^221000022003 is an apocalyptic number.

221000022003 is a deficient number, since it is larger than the sum of its proper divisors (73666674005).

221000022003 is an equidigital number, since it uses as much as digits as its factorization.

221000022003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73666674004.

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 221000022003 its reverse (300220000122), we get a palindrome (521220022125).

The spelling of 221000022003 in words is "two hundred twenty-one billion, twenty-two thousand, three".