12220205112 has 96 divisors (see below), whose sum is σ = 33534380880. Its totient is φ = 4019742720.

The previous prime is 12220205099. The next prime is 12220205113. The reversal of 12220205112 is 21150202221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220205113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2602687 + ... + 2607377.

Almost surely, 2^12220205112 is an apocalyptic number.

12220205112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12220205112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16767190440).

12220205112 is an abundant number, since it is smaller than the sum of its proper divisors (21314175768).

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

12220205112 is a wasteful number, since it uses less digits than its factorization.

12220205112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173 (or 5166 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 12220205112 its reverse (21150202221), we get a palindrome (33370407333).

The spelling of 12220205112 in words is "twelve billion, two hundred twenty million, two hundred five thousand, one hundred twelve".