12112011000 has 160 divisors (see below), whose sum is σ = 42338490480. Its totient is φ = 3229848000.

The previous prime is 12112010993. The next prime is 12112011011. The reversal of 12112011000 is 11021121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6235 + ... + 155765.

Almost surely, 2^12112011000 is an apocalyptic number.

12112011000 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 12112011000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21169245240).

12112011000 is an abundant number, since it is smaller than the sum of its proper divisors (30226479480).

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

12112011000 is a wasteful number, since it uses less digits than its factorization.

12112011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149564 (or 149541 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12112011000 its reverse (11021121), we get a palindrome (12123032121).

It can be divided in two parts, 1211201 and 1000, that added together give a square (1212201 = 1101²).

The spelling of 12112011000 in words is "twelve billion, one hundred twelve million, eleven thousand".