1200232131012 has 36 divisors (see below), whose sum is σ = 3039367053996. Its totient is φ = 399359098560.

The previous prime is 1200232130957. The next prime is 1200232131013. The reversal of 1200232131012 is 2101312320021.

1200232131012 is a `hidden beast` number, since 1 + 20 + 0 + 2 + 321 + 310 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 489977600256 + 710254530756 = 699984^2 + 842766^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1200232131013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29907939 + ... + 29948042.

It is an arithmetic number, because the mean of its divisors is an integer number (84426862611).

Almost surely, 2^{1200232131012} is an apocalyptic number.

1200232131012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200232131012 is an abundant number, since it is smaller than the sum of its proper divisors (1839134922984).

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

1200232131012 is a wasteful number, since it uses less digits than its factorization.

1200232131012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59856548 (or 59856543 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1200232131012 its reverse (2101312320021), we get a palindrome (3301544451033).

The spelling of 1200232131012 in words is "one trillion, two hundred billion, two hundred thirty-two million, one hundred thirty-one thousand, twelve".