12212201121100 has 72 divisors (see below), whose sum is σ = 26606455202880. Its totient is φ = 4865349304320.

The previous prime is 12212201121053. The next prime is 12212201121101. The reversal of 12212201121100 is 112110221221.

It is not an unprimeable number, because it can be changed into a prime (12212201121101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313443421 + ... + 313482379.

It is an arithmetic number, because the mean of its divisors is an integer number (369534100040).

Almost surely, 2^{12212201121100} is an apocalyptic number.

12212201121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212201121100 is an abundant number, since it is smaller than the sum of its proper divisors (14394254081780).

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

12212201121100 is a wasteful number, since it uses less digits than its factorization.

12212201121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51427 (or 51420 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12212201121100 its reverse (112110221221), we get a palindrome (12324311342321).

The spelling of 12212201121100 in words is "twelve trillion, two hundred twelve billion, two hundred one million, one hundred twenty-one thousand, one hundred".