131212213000421 has 16 divisors (see below), whose sum is σ = 158778960223104. Its totient is φ = 105851098473984.

The previous prime is 131212213000357. The next prime is 131212213000423. The reversal of 131212213000421 is 124000312212131.

It is not a de Polignac number, because 131212213000421 - 2⁶ = 131212213000357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212213000423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12685706 + ... + 20575508.

It is an arithmetic number, because the mean of its divisors is an integer number (9923685013944).

Almost surely, 2^{131212213000421} is an apocalyptic number.

It is an amenable number.

131212213000421 is a deficient number, since it is larger than the sum of its proper divisors (27566747222683).

131212213000421 is a wasteful number, since it uses less digits than its factorization.

131212213000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8029580.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 131212213000421 its reverse (124000312212131), we get a palindrome (255212525212552).

The spelling of 131212213000421 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred thirteen million, four hundred twenty-one", and thus it is an aban number.