1200231132100 has 648 divisors, whose sum is σ = 3781729328832. Its totient is φ = 324953395200.

The previous prime is 1200231132041. The next prime is 1200231132127. The reversal of 1200231132100 is 12311320021.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 202499337 + ... + 202505263.

Almost surely, 2^{1200231132100} is an apocalyptic number.

1200231132100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200231132100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1890864664416).

1200231132100 is an abundant number, since it is smaller than the sum of its proper divisors (2581498196732).

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

1200231132100 is a wasteful number, since it uses less digits than its factorization.

1200231132100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013 (or 5982 counting only the distinct ones).

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

Adding to 1200231132100 its reverse (12311320021), we get a palindrome (1212542452121).

It can be divided in two parts, 1200231 and 132100, that added together give a palindrome (1332331).

The spelling of 1200231132100 in words is "one trillion, two hundred billion, two hundred thirty-one million, one hundred thirty-two thousand, one hundred".