221212301103 has 20 divisors (see below), whose sum is σ = 333724767288. Its totient is φ = 146014714800.

The previous prime is 221212301087. The next prime is 221212301113. The reversal of 221212301103 is 301103212122.

It is not a de Polignac number, because 221212301103 - 2⁴ = 221212301087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212301113) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13511701 + ... + 13528062.

Almost surely, 2^221212301103 is an apocalyptic number.

221212301103 is a deficient number, since it is larger than the sum of its proper divisors (112512466185).

221212301103 is a wasteful number, since it uses less digits than its factorization.

221212301103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27039876 (or 27039867 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 221212301103 its reverse (301103212122), we get a palindrome (522315513225).

The spelling of 221212301103 in words is "two hundred twenty-one billion, two hundred twelve million, three hundred one thousand, one hundred three".