12112121211000 has 128 divisors (see below), whose sum is σ = 37954841371200. Its totient is φ = 3215794444800.

The previous prime is 12112121210993. The next prime is 12112121211007. The reversal of 12112121211000 is 11212121121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12112121210993) and next prime (12112121211007).

It is a super-4 number, since 4×12112121211000⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112121211007) 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, 8128227 + ... + 9502226.

Almost surely, 2^{12112121211000} is an apocalyptic number.

12112121211000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112121211000 is an abundant number, since it is smaller than the sum of its proper divisors (25842720160200).

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

12112121211000 is a wasteful number, since it uses less digits than its factorization.

12112121211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17630706 (or 17630692 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12112121211000 its reverse (11212121121), we get a palindrome (12123333332121).

The spelling of 12112121211000 in words is "twelve trillion, one hundred twelve billion, one hundred twenty-one million, two hundred eleven thousand".