12201220112 has 20 divisors (see below), whose sum is σ = 24455032620. Its totient is φ = 5890243968.

The previous prime is 12201220027. The next prime is 12201220117. The reversal of 12201220112 is 21102210221.

It can be written as a sum of positive squares in 2 ways, for example, as 10354283536 + 1846936576 = 101756^2 + 42976^2 .

It is not an unprimeable number, because it can be changed into a prime (12201220117) 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, 13147403 + ... + 13148330.

It is an arithmetic number, because the mean of its divisors is an integer number (1222751631).

Almost surely, 2^12201220112 is an apocalyptic number.

It is an amenable number.

12201220112 is an abundant number, since it is smaller than the sum of its proper divisors (12253812508).

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

12201220112 is a wasteful number, since it uses less digits than its factorization.

12201220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26295770 (or 26295764 counting only the distinct ones).

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

Adding to 12201220112 its reverse (21102210221), we get a palindrome (33303430333).

The spelling of 12201220112 in words is "twelve billion, two hundred one million, two hundred twenty thousand, one hundred twelve".