1213132131012 has 12 divisors (see below), whose sum is σ = 2830641639056. Its totient is φ = 404377377000.

The previous prime is 1213132131007. The next prime is 1213132131017. The reversal of 1213132131012 is 2101312313121.

It is an interprime number because it is at equal distance from previous prime (1213132131007) and next prime (1213132131017).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1213132131012.

It is not an unprimeable number, because it can be changed into a prime (1213132131017) by changing a digit.

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, 50547172114 + ... + 50547172137.

Almost surely, 2^{1213132131012} is an apocalyptic number.

1213132131012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213132131012 is an abundant number, since it is smaller than the sum of its proper divisors (1617509508044).

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

1213132131012 is a wasteful number, since it uses less digits than its factorization.

1213132131012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101094344258 (or 101094344256 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1213132131012 its reverse (2101312313121), we get a palindrome (3314444444133).

The spelling of 1213132131012 in words is "one trillion, two hundred thirteen billion, one hundred thirty-two million, one hundred thirty-one thousand, twelve".