121111132200 has 192 divisors, whose sum is σ = 400105820160. Its totient is φ = 30234673920.

The previous prime is 121111132183. The next prime is 121111132229. The reversal of 121111132200 is 2231111121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121111132200.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 555237 + ... + 741963.

It is an arithmetic number, because the mean of its divisors is an integer number (2083884480).

Almost surely, 2^121111132200 is an apocalyptic number.

121111132200 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 121111132200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200052910080).

121111132200 is an abundant number, since it is smaller than the sum of its proper divisors (278994687960).

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

121111132200 is a wasteful number, since it uses less digits than its factorization.

121111132200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186816 (or 186807 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121111132200 its reverse (2231111121), we get a palindrome (123342243321).

The spelling of 121111132200 in words is "one hundred twenty-one billion, one hundred eleven million, one hundred thirty-two thousand, two hundred".