12112101210 has 96 divisors (see below), whose sum is σ = 32429468736. Its totient is φ = 2892384000.

The previous prime is 12112101191. The next prime is 12112101263. The reversal of 12112101210 is 1210121121.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 218310 + ... + 268110.

It is an arithmetic number, because the mean of its divisors is an integer number (337806966).

Almost surely, 2^12112101210 is an apocalyptic number.

12112101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12112101210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16214734368).

12112101210 is an abundant number, since it is smaller than the sum of its proper divisors (20317367526).

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

12112101210 is a wasteful number, since it uses less digits than its factorization.

12112101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49900 (or 49889 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12112101210 its reverse (1210121121), we get a palindrome (13322222331).

The spelling of 12112101210 in words is "twelve billion, one hundred twelve million, one hundred one thousand, two hundred ten".