12200112221 has 4 divisors (see below), whose sum is σ = 13309213344. Its totient is φ = 11091011100.

The previous prime is 12200112187. The next prime is 12200112251. The reversal of 12200112221 is 12221100221.

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 a cyclic number.

It is not a de Polignac number, because 12200112221 - 2¹⁰ = 12200111197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12200112196 and 12200112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200112251) 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, 554550545 + ... + 554550566.

It is an arithmetic number, because the mean of its divisors is an integer number (3327303336).

Almost surely, 2^12200112221 is an apocalyptic number.

12200112221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12200112221 is a deficient number, since it is larger than the sum of its proper divisors (1109101123).

12200112221 is a wasteful number, since it uses less digits than its factorization.

12200112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109101122.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12200112221 its reverse (12221100221), we get a palindrome (24421212442).

It can be divided in two parts, 12200 and 112221, that added together give a palindrome (124421).

The spelling of 12200112221 in words is "twelve billion, two hundred million, one hundred twelve thousand, two hundred twenty-one".