12110101220 has 96 divisors (see below), whose sum is σ = 30481920000. Its totient is φ = 3951345024.

The previous prime is 12110101207. The next prime is 12110101247. The reversal of 12110101220 is 2210101121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 631331 + ... + 650229.

It is an arithmetic number, because the mean of its divisors is an integer number (317520000).

Almost surely, 2^12110101220 is an apocalyptic number.

12110101220 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 12110101220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15240960000).

12110101220 is an abundant number, since it is smaller than the sum of its proper divisors (18371818780).

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

12110101220 is a wasteful number, since it uses less digits than its factorization.

12110101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19137 (or 19135 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12110101220 its reverse (2210101121), we get a palindrome (14320202341).

Subtracting from 12110101220 its reverse (2210101121), we obtain a palindrome (9900000099).

The spelling of 12110101220 in words is "twelve billion, one hundred ten million, one hundred one thousand, two hundred twenty".