1131131212100 has 36 divisors (see below), whose sum is σ = 2456633356548. Its totient is φ = 452069328000.

The previous prime is 1131131212093. The next prime is 1131131212181. The reversal of 1131131212100 is 12121311311.

It can be written as a sum of positive squares in 6 ways, for example, as 186319995904 + 944811216196 = 431648^2 + 972014^2 .

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 11 ways as a sum of consecutive naturals, for example, 4670771 + ... + 4906970.

Almost surely, 2^{1131131212100} is an apocalyptic number.

1131131212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131131212100 is an abundant number, since it is smaller than the sum of its proper divisors (1325502144448).

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

1131131212100 is a wasteful number, since it uses less digits than its factorization.

1131131212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9578936 (or 9578929 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1131131212100 its reverse (12121311311), we get a palindrome (1143252523411).

The spelling of 1131131212100 in words is "one trillion, one hundred thirty-one billion, one hundred thirty-one million, two hundred twelve thousand, one hundred".