12103200221 has 4 divisors (see below), whose sum is σ = 13832228832. Its totient is φ = 10374171612.

The previous prime is 12103200217. The next prime is 12103200227. The reversal of 12103200221 is 12200230121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12103200221 - 2² = 12103200217 is a prime.

It is a super-2 number, since 2×12103200221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12103200196 and 12103200205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103200227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864514295 + ... + 864514308.

It is an arithmetic number, because the mean of its divisors is an integer number (3458057208).

Almost surely, 2^12103200221 is an apocalyptic number.

It is an amenable number.

12103200221 is a deficient number, since it is larger than the sum of its proper divisors (1729028611).

12103200221 is an equidigital number, since it uses as much as digits as its factorization.

12103200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729028610.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12103200221 its reverse (12200230121), we get a palindrome (24303430342).

The spelling of 12103200221 in words is "twelve billion, one hundred three million, two hundred thousand, two hundred twenty-one".