12200221212 has 12 divisors (see below), whose sum is σ = 28467182856. Its totient is φ = 4066740400.

The previous prime is 12200221199. The next prime is 12200221237. The reversal of 12200221212 is 21212200221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12200221191 and 12200221200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508342539 + ... + 508342562.

It is an arithmetic number, because the mean of its divisors is an integer number (2372265238).

Almost surely, 2^12200221212 is an apocalyptic number.

12200221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12200221212 is an abundant number, since it is smaller than the sum of its proper divisors (16266961644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12200221212 is a wasteful number, since it uses less digits than its factorization.

12200221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016685108 (or 1016685106 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12200221212 its reverse (21212200221), we get a palindrome (33412421433).

It can be divided in two parts, 12200221 and 212, that multiplied together give a palindrome (2586446852).

The spelling of 12200221212 in words is "twelve billion, two hundred million, two hundred twenty-one thousand, two hundred twelve".