12012212101100 has 144 divisors (see below), whose sum is σ = 26652766509600. Its totient is φ = 4698054328320.

The previous prime is 12012212101069. The next prime is 12012212101133. The reversal of 12012212101100 is 110121221021.

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, 769069091 + ... + 769084709.

Almost surely, 2^{12012212101100} is an apocalyptic number.

12012212101100 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 12012212101100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13326383254800).

12012212101100 is an abundant number, since it is smaller than the sum of its proper divisors (14640554408500).

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

12012212101100 is a wasteful number, since it uses less digits than its factorization.

12012212101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16612 (or 16605 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12012212101100 its reverse (110121221021), we get a palindrome (12122333322121).

The spelling of 12012212101100 in words is "twelve trillion, twelve billion, two hundred twelve million, one hundred one thousand, one hundred".