221020000103 has 6 divisors (see below), whose sum is σ = 257104898136. Its totient is φ = 189445714332.

The previous prime is 221020000099. The next prime is 221020000127. The reversal of 221020000103 is 301000020122.

It is a happy number.

It is not a de Polignac number, because 221020000103 - 2² = 221020000099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020000163) 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 5 ways as a sum of consecutive naturals, for example, 2255306075 + ... + 2255306172.

It is an arithmetic number, because the mean of its divisors is an integer number (42850816356).

Almost surely, 2^221020000103 is an apocalyptic number.

221020000103 is a deficient number, since it is larger than the sum of its proper divisors (36084898033).

221020000103 is an equidigital number, since it uses as much as digits as its factorization.

221020000103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510612261 (or 4510612254 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 221020000103 its reverse (301000020122), we get a palindrome (522020020225).

The spelling of 221020000103 in words is "two hundred twenty-one billion, twenty million, one hundred three", and thus it is an aban number.