1131221113200 has 180 divisors, whose sum is σ = 4031750654568. Its totient is φ = 293505984000.

The previous prime is 1131221113189. The next prime is 1131221113303. The reversal of 1131221113200 is 23111221311.

1131221113200 is a `hidden beast` number, since 1 + 1 + 312 + 21 + 11 + 320 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a super-2 number, since 2×1131221113200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4113126 + ... + 4379525.

Almost surely, 2^{1131221113200} is an apocalyptic number.

1131221113200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131221113200 is an abundant number, since it is smaller than the sum of its proper divisors (2900529541368).

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

1131221113200 is a wasteful number, since it uses less digits than its factorization.

1131221113200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8492712 (or 8492698 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1131221113200 its reverse (23111221311), we get a palindrome (1154332334511).

It can be divided in two parts, 1131221 and 113200, that added together give a palindrome (1244421).

The spelling of 1131221113200 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-one million, one hundred thirteen thousand, two hundred".