1131031121200 has 60 divisors (see below), whose sum is σ = 2726904316408. Its totient is φ = 450813772800.

The previous prime is 1131031121179. The next prime is 1131031121267. The reversal of 1131031121200 is 21211301311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4882521 + ... + 5108920.

Almost surely, 2^{1131031121200} is an apocalyptic number.

1131031121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131031121200 is an abundant number, since it is smaller than the sum of its proper divisors (1595873195208).

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

1131031121200 is a wasteful number, since it uses less digits than its factorization.

1131031121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9991742 (or 9991731 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1131031121200 its reverse (21211301311), we get a palindrome (1152242422511).

The spelling of 1131031121200 in words is "one trillion, one hundred thirty-one billion, thirty-one million, one hundred twenty-one thousand, two hundred".