12112232240 has 40 divisors (see below), whose sum is σ = 28306887648. Its totient is φ = 4819783680.

The previous prime is 12112232227. The next prime is 12112232257. The reversal of 12112232240 is 4223221121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376796 + ... + 407675.

Almost surely, 2^12112232240 is an apocalyptic number.

12112232240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112232240 is an abundant number, since it is smaller than the sum of its proper divisors (16194655408).

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

12112232240 is a wasteful number, since it uses less digits than its factorization.

12112232240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784677 (or 784671 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12112232240 its reverse (4223221121), we get a palindrome (16335453361).

The spelling of 12112232240 in words is "twelve billion, one hundred twelve million, two hundred thirty-two thousand, two hundred forty".