221221100022003 has 16 divisors (see below), whose sum is σ = 327779186064000. Its totient is φ = 147460832967240.

The previous prime is 221221100021983. The next prime is 221221100022037. The reversal of 221221100022003 is 300220001122122.

221221100022003 is a `hidden beast` number, since 221 + 221 + 1 + 0 + 0 + 0 + 220 + 0 + 3 = 666.

It is not a de Polignac number, because 221221100022003 - 2⁹ = 221221100021491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221221100022803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552584553 + ... + 552984746.

It is an arithmetic number, because the mean of its divisors is an integer number (20486199129000).

Almost surely, 2^{221221100022003} is an apocalyptic number.

221221100022003 is a deficient number, since it is larger than the sum of its proper divisors (106558086041997).

221221100022003 is a wasteful number, since it uses less digits than its factorization.

221221100022003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105576719 (or 1105576713 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 221221100022003 its reverse (300220001122122), we get a palindrome (521441101144125).

The spelling of 221221100022003 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, one hundred million, twenty-two thousand, three".