1131213232100 has 72 divisors (see below), whose sum is σ = 2805558974400. Its totient is φ = 387823777920.

The previous prime is 1131213232087. The next prime is 1131213232109. The reversal of 1131213232100 is 12323121311.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1131213232109) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 19079702 + ... + 19138898.

Almost surely, 2^{1131213232100} is an apocalyptic number.

1131213232100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131213232100 is an abundant number, since it is smaller than the sum of its proper divisors (1674345742300).

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

1131213232100 is a wasteful number, since it uses less digits than its factorization.

1131213232100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86517 (or 86510 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1131213232100 its reverse (12323121311), we get a palindrome (1143536353411).

The spelling of 1131213232100 in words is "one trillion, one hundred thirty-one billion, two hundred thirteen million, two hundred thirty-two thousand, one hundred".