131212120441455 has 24 divisors (see below), whose sum is σ = 227534577772320. Its totient is φ = 69948955823040.

The previous prime is 131212120441453. The next prime is 131212120441513. The reversal of 131212120441455 is 554144021212131.

131212120441455 is a `hidden beast` number, since 1 + 3 + 1 + 21 + 212 + 0 + 4 + 414 + 5 + 5 = 666.

It is not a de Polignac number, because 131212120441455 - 2¹ = 131212120441453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212120441453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 642433131 + ... + 642637340.

It is an arithmetic number, because the mean of its divisors is an integer number (9480607407180).

Almost surely, 2^{131212120441455} is an apocalyptic number.

131212120441455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131212120441455 is a deficient number, since it is larger than the sum of its proper divisors (96322457330865).

131212120441455 is a wasteful number, since it uses less digits than its factorization.

131212120441455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285072751 (or 1285072748 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

Adding to 131212120441455 its reverse (554144021212131), we get a palindrome (685356141653586).

The spelling of 131212120441455 in words is "one hundred thirty-one trillion, two hundred twelve billion, one hundred twenty million, four hundred forty-one thousand, four hundred fifty-five".