212221022103 has 24 divisors (see below), whose sum is σ = 321476812800. Its totient is φ = 134649274320.

The previous prime is 212221022099. The next prime is 212221022161. The reversal of 212221022103 is 301220122212.

It is not a de Polignac number, because 212221022103 - 2² = 212221022099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221027103) 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 23 ways as a sum of consecutive naturals, for example, 2534743 + ... + 2617128.

It is an arithmetic number, because the mean of its divisors is an integer number (13394867200).

Almost surely, 2^212221022103 is an apocalyptic number.

212221022103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

212221022103 is a deficient number, since it is larger than the sum of its proper divisors (109255790697).

212221022103 is a wasteful number, since it uses less digits than its factorization.

212221022103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5152099 (or 5152096 counting only the distinct ones).

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

Adding to 212221022103 its reverse (301220122212), we get a palindrome (513441144315).

The spelling of 212221022103 in words is "two hundred twelve billion, two hundred twenty-one million, twenty-two thousand, one hundred three".