12112203220 has 192 divisors, whose sum is σ = 30354912000. Its totient is φ = 4018581504.

The previous prime is 12112203203. The next prime is 12112203241. The reversal of 12112203220 is 2230221121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12112203194 and 12112203203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8451624 + ... + 8453056.

It is an arithmetic number, because the mean of its divisors is an integer number (158098500).

Almost surely, 2^12112203220 is an apocalyptic number.

12112203220 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 12112203220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15177456000).

12112203220 is an abundant number, since it is smaller than the sum of its proper divisors (18242708780).

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

12112203220 is a wasteful number, since it uses less digits than its factorization.

12112203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12112203220 its reverse (2230221121), we get a palindrome (14342424341).

The spelling of 12112203220 in words is "twelve billion, one hundred twelve million, two hundred three thousand, two hundred twenty".