12121112112200 has 96 divisors (see below), whose sum is σ = 34685028557760. Its totient is φ = 3836132179200.

The previous prime is 12121112112199. The next prime is 12121112112203. The reversal of 12121112112200 is 221121112121.

It is not an unprimeable number, because it can be changed into a prime (12121112112203) 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, 332979386 + ... + 333015785.

It is an arithmetic number, because the mean of its divisors is an integer number (361302380810).

Almost surely, 2^{12121112112200} is an apocalyptic number.

12121112112200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121112112200 is an abundant number, since it is smaller than the sum of its proper divisors (22563916445560).

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

12121112112200 is a wasteful number, since it uses less digits than its factorization.

12121112112200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665995207 (or 665995198 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12121112112200 its reverse (221121112121), we get a palindrome (12342233224321).

The spelling of 12121112112200 in words is "twelve trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twelve thousand, two hundred".