12111212210200 has 96 divisors (see below), whose sum is σ = 28672667956800. Its totient is φ = 4756753848960.

The previous prime is 12111212210197. The next prime is 12111212210233. The reversal of 12111212210200 is 201221211121.

It is a super-2 number, since 2×12111212210200² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 467791 + ... + 4943809.

It is an arithmetic number, because the mean of its divisors is an integer number (298673624550).

Almost surely, 2^{12111212210200} is an apocalyptic number.

12111212210200 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 12111212210200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14336333978400).

12111212210200 is an abundant number, since it is smaller than the sum of its proper divisors (16561455746600).

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

12111212210200 is a wasteful number, since it uses less digits than its factorization.

12111212210200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4476281 (or 4476272 counting only the distinct ones).

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

Adding to 12111212210200 its reverse (201221211121), we get a palindrome (12312433421321).

The spelling of 12111212210200 in words is "twelve trillion, one hundred eleven billion, two hundred twelve million, two hundred ten thousand, two hundred".