12102212001220 has 96 divisors (see below), whose sum is σ = 29235577795200. Its totient is φ = 4161855052800.

The previous prime is 12102212001203. The next prime is 12102212001287. The reversal of 12102212001220 is 2210021220121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12102212001194 and 12102212001203.

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, 165751 + ... + 4922590.

It is an arithmetic number, because the mean of its divisors is an integer number (304537268700).

Almost surely, 2^{12102212001220} is an apocalyptic number.

12102212001220 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 12102212001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14617788897600).

12102212001220 is an abundant number, since it is smaller than the sum of its proper divisors (17133365793980).

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

12102212001220 is a wasteful number, since it uses less digits than its factorization.

12102212001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088949 (or 5088947 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12102212001220 its reverse (2210021220121), we get a palindrome (14312233221341).

The spelling of 12102212001220 in words is "twelve trillion, one hundred two billion, two hundred twelve million, one thousand, two hundred twenty".