1121200111200 has 576 divisors, whose sum is σ = 4106352801600. Its totient is φ = 263811072000.

The previous prime is 1121200111177. The next prime is 1121200111243. The reversal of 1121200111200 is 21110021211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 91378666 + ... + 91390934.

It is an arithmetic number, because the mean of its divisors is an integer number (7129084725).

Almost surely, 2^{1121200111200} is an apocalyptic number.

1121200111200 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 1121200111200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2053176400800).

1121200111200 is an abundant number, since it is smaller than the sum of its proper divisors (2985152690400).

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

1121200111200 is a wasteful number, since it uses less digits than its factorization.

1121200111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12435 (or 12422 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1121200111200 its reverse (21110021211), we get a palindrome (1142310132411).

It can be divided in two parts, 112120011 and 1200, that added together give a palindrome (112121211).

The spelling of 1121200111200 in words is "one trillion, one hundred twenty-one billion, two hundred million, one hundred eleven thousand, two hundred".