1200132131100 has 144 divisors (see below), whose sum is σ = 3999685337088. Its totient is φ = 272155887360.

The previous prime is 1200132131063. The next prime is 1200132131147. The reversal of 1200132131100 is 11312310021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1200132131100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1983267 + ... + 2516666.

Almost surely, 2^{1200132131100} is an apocalyptic number.

1200132131100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200132131100 is an abundant number, since it is smaller than the sum of its proper divisors (2799553205988).

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

1200132131100 is a wasteful number, since it uses less digits than its factorization.

1200132131100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500084 (or 4500077 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1200132131100 its reverse (11312310021), we get a palindrome (1211444441121).

The spelling of 1200132131100 in words is "one trillion, two hundred billion, one hundred thirty-two million, one hundred thirty-one thousand, one hundred".