12102440221100 has 72 divisors (see below), whose sum is σ = 28331799336288. Its totient is φ = 4470246476800.

The previous prime is 12102440221073. The next prime is 12102440221111. The reversal of 12102440221100 is 112204420121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67071056 + ... + 67251255.

It is an arithmetic number, because the mean of its divisors is an integer number (393497213004).

Almost surely, 2^{12102440221100} is an apocalyptic number.

12102440221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102440221100 is an abundant number, since it is smaller than the sum of its proper divisors (16229359115188).

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

12102440221100 is a wasteful number, since it uses less digits than its factorization.

12102440221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134322395 (or 134322388 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12102440221100 its reverse (112204420121), we get a palindrome (12214644641221).

The spelling of 12102440221100 in words is "twelve trillion, one hundred two billion, four hundred forty million, two hundred twenty-one thousand, one hundred".