1121233401200 has 120 divisors (see below), whose sum is σ = 2939101565520. Its totient is φ = 407658700800.

The previous prime is 1121233401191. The next prime is 1121233401259. The reversal of 1121233401200 is 21043321211.

It is a super-2 number, since 2×1121233401200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36368192 + ... + 36399008.

It is an arithmetic number, because the mean of its divisors is an integer number (24492513046).

Almost surely, 2^{1121233401200} is an apocalyptic number.

1121233401200 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 1121233401200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1469550782760).

1121233401200 is an abundant number, since it is smaller than the sum of its proper divisors (1817868164320).

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

1121233401200 is a wasteful number, since it uses less digits than its factorization.

1121233401200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39115 (or 39104 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1121233401200 its reverse (21043321211), we get a palindrome (1142276722411).

The spelling of 1121233401200 in words is "one trillion, one hundred twenty-one billion, two hundred thirty-three million, four hundred one thousand, two hundred".