1231200132112 has 20 divisors (see below), whose sum is σ = 2391116421676. Its totient is φ = 614137829760.

The previous prime is 1231200132079. The next prime is 1231200132133. The reversal of 1231200132112 is 2112310021321.

It can be written as a sum of positive squares in 2 ways, for example, as 23671668736 + 1207528463376 = 153856^2 + 1098876^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1231200132112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91382823 + ... + 91396294.

Almost surely, 2^{1231200132112} is an apocalyptic number.

It is an amenable number.

1231200132112 is a deficient number, since it is larger than the sum of its proper divisors (1159916289564).

1231200132112 is a wasteful number, since it uses less digits than its factorization.

1231200132112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182779546 (or 182779540 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1231200132112 its reverse (2112310021321), we get a palindrome (3343510153433).

The spelling of 1231200132112 in words is "one trillion, two hundred thirty-one billion, two hundred million, one hundred thirty-two thousand, one hundred twelve".