12200111220 has 96 divisors (see below), whose sum is σ = 37550532096. Its totient is φ = 2935004800.

The previous prime is 12200111219. The next prime is 12200111221. The reversal of 12200111220 is 2211100221.

It is an interprime number because it is at equal distance from previous prime (12200111219) and next prime (12200111221).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12200111196 and 12200111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200111221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15907 + ... + 157013.

It is an arithmetic number, because the mean of its divisors is an integer number (391151376).

Almost surely, 2^12200111220 is an apocalyptic number.

12200111220 is a gapful number since it is divisible by the number (10) 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 12200111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18775266048).

12200111220 is an abundant number, since it is smaller than the sum of its proper divisors (25350420876).

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

12200111220 is a wasteful number, since it uses less digits than its factorization.

12200111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141261 (or 141259 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12200111220 its reverse (2211100221), we get a palindrome (14411211441).

The spelling of 12200111220 in words is "twelve billion, two hundred million, one hundred eleven thousand, two hundred twenty".