111212201121200 has 120 divisors (see below), whose sum is σ = 282909524127120. Its totient is φ = 41867336908800.

The previous prime is 111212201121139. The next prime is 111212201121209. The reversal of 111212201121200 is 2121102212111.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (111212201121209) 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, 466435616 + ... + 466673984.

It is an arithmetic number, because the mean of its divisors is an integer number (2357579367726).

Almost surely, 2^{111212201121200} is an apocalyptic number.

111212201121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212201121200 is an abundant number, since it is smaller than the sum of its proper divisors (171697323005920).

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

111212201121200 is a wasteful number, since it uses less digits than its factorization.

111212201121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307015 (or 307004 counting only the distinct ones).

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

Adding to 111212201121200 its reverse (2121102212111), we get a palindrome (113333303333311).

The spelling of 111212201121200 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred one million, one hundred twenty-one thousand, two hundred".