212221220103 has 40 divisors (see below), whose sum is σ = 329508661680. Its totient is φ = 135954443520.

The previous prime is 212221220093. The next prime is 212221220177. The reversal of 212221220103 is 301022122212.

212221220103 is a `hidden beast` number, since 212 + 221 + 220 + 10 + 3 = 666.

It is not a de Polignac number, because 212221220103 - 2¹² = 212221216007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221227103) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 281551 + ... + 709727.

It is an arithmetic number, because the mean of its divisors is an integer number (8237716542).

Almost surely, 2^212221220103 is an apocalyptic number.

212221220103 is a deficient number, since it is larger than the sum of its proper divisors (117287441577).

212221220103 is a wasteful number, since it uses less digits than its factorization.

212221220103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428429 (or 428420 counting only the distinct ones).

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

Adding to 212221220103 its reverse (301022122212), we get a palindrome (513243342315).

The spelling of 212221220103 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred twenty thousand, one hundred three".