221020221020103 has 48 divisors (see below), whose sum is σ = 333859575429120. Its totient is φ = 140632655404032.

The previous prime is 221020221020099. The next prime is 221020221020113. The reversal of 221020221020103 is 301020122020122.

221020221020103 is a `hidden beast` number, since 221 + 0 + 20 + 221 + 0 + 201 + 0 + 3 = 666.

It is not a de Polignac number, because 221020221020103 - 2² = 221020221020099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020221020113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 793530018 + ... + 793808496.

It is an arithmetic number, because the mean of its divisors is an integer number (6955407821440).

Almost surely, 2^{221020221020103} is an apocalyptic number.

221020221020103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

221020221020103 is a deficient number, since it is larger than the sum of its proper divisors (112839354409017).

221020221020103 is a wasteful number, since it uses less digits than its factorization.

221020221020103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286868 (or 286865 counting only the distinct ones).

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

Adding to 221020221020103 its reverse (301020122020122), we get a palindrome (522040343040225).

The spelling of 221020221020103 in words is "two hundred twenty-one trillion, twenty billion, two hundred twenty-one million, twenty thousand, one hundred three".