131212012211340 has 48 divisors (see below), whose sum is σ = 367837882981632. Its totient is φ = 34947560514496.

The previous prime is 131212012211323. The next prime is 131212012211419. The reversal of 131212012211340 is 43112210212131.

It is a self number, because there is not a number n which added to its sum of digits gives 131212012211340.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1322118984 + ... + 1322218223.

It is an arithmetic number, because the mean of its divisors is an integer number (7663289228784).

Almost surely, 2^{131212012211340} is an apocalyptic number.

131212012211340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131212012211340 is an abundant number, since it is smaller than the sum of its proper divisors (236625870770292).

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

131212012211340 is a wasteful number, since it uses less digits than its factorization.

131212012211340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644338046 (or 2644338044 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 131212012211340 its reverse (43112210212131), we get a palindrome (174324222423471).

The spelling of 131212012211340 in words is "one hundred thirty-one trillion, two hundred twelve billion, twelve million, two hundred eleven thousand, three hundred forty".