1200321132100 has 36 divisors (see below), whose sum is σ = 2604763514500. Its totient is φ = 480116165760.

The previous prime is 1200321132097. The next prime is 1200321132139. The reversal of 1200321132100 is 12311230021.

It can be written as a sum of positive squares in 6 ways, for example, as 54427956804 + 1145893175296 = 233298^2 + 1070464^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4464286 + ... + 4725514.

Almost surely, 2^{1200321132100} is an apocalyptic number.

1200321132100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200321132100 is an abundant number, since it is smaller than the sum of its proper divisors (1404442382400).

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

1200321132100 is a wasteful number, since it uses less digits than its factorization.

1200321132100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307192 (or 307185 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1200321132100 its reverse (12311230021), we get a palindrome (1212632362121).

The spelling of 1200321132100 in words is "one trillion, two hundred billion, three hundred twenty-one million, one hundred thirty-two thousand, one hundred".