12111221022200 has 24 divisors (see below), whose sum is σ = 28158588877080. Its totient is φ = 4844488408800.

The previous prime is 12111221022179. The next prime is 12111221022203. The reversal of 12111221022200 is 222012211121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111221022203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30278052356 + ... + 30278052755.

It is an arithmetic number, because the mean of its divisors is an integer number (1173274536545).

Almost surely, 2^{12111221022200} is an apocalyptic number.

12111221022200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111221022200 is an abundant number, since it is smaller than the sum of its proper divisors (16047367854880).

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

12111221022200 is a wasteful number, since it uses less digits than its factorization.

12111221022200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60556105127 (or 60556105118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12111221022200 its reverse (222012211121), we get a palindrome (12333233233321).

It can be divided in two parts, 1211122 and 1022200, that added together give a palindrome (2233322).

The spelling of 12111221022200 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-one million, twenty-two thousand, two hundred".