13212151031205 has 24 divisors (see below), whose sum is σ = 26172642043392. Its totient is φ = 6039840471264.

The previous prime is 13212151031173. The next prime is 13212151031213. The reversal of 13212151031205 is 50213015121231.

13212151031205 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 21 + 510 + 3 + 120 + 5 = 666.

It is not a de Polignac number, because 13212151031205 - 2⁵ = 13212151031173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20971667989 + ... + 20971668618.

It is an arithmetic number, because the mean of its divisors is an integer number (1090526751808).

Almost surely, 2^{13212151031205} is an apocalyptic number.

13212151031205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13212151031205 is a deficient number, since it is larger than the sum of its proper divisors (12960491012187).

13212151031205 is a wasteful number, since it uses less digits than its factorization.

13212151031205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41943336625 (or 41943336622 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 13212151031205 its reverse (50213015121231), we get a palindrome (63425166152436).

The spelling of 13212151031205 in words is "thirteen trillion, two hundred twelve billion, one hundred fifty-one million, thirty-one thousand, two hundred five".