1121212012200 has 144 divisors (see below), whose sum is σ = 4043227913280. Its totient is φ = 256277024640.

The previous prime is 1121212012187. The next prime is 1121212012213. The reversal of 1121212012200 is 22102121211.

It is an interprime number because it is at equal distance from previous prime (1121212012187) and next prime (1121212012213).

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 1121212012200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19038832 + ... + 19097631.

It is an arithmetic number, because the mean of its divisors is an integer number (28077971620).

Almost surely, 2^{1121212012200} is an apocalyptic number.

1121212012200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121212012200 is an abundant number, since it is smaller than the sum of its proper divisors (2922015901080).

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

1121212012200 is a wasteful number, since it uses less digits than its factorization.

1121212012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38136496 (or 38136480 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1121212012200 its reverse (22102121211), we get a palindrome (1143314133411).

The spelling of 1121212012200 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, twelve thousand, two hundred".