13212120312231 has 8 divisors (see below), whose sum is σ = 18092272860144. Its totient is φ = 8570023986240.

The previous prime is 13212120312191. The next prime is 13212120312257. The reversal of 13212120312231 is 13221302121231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13212120312231 - 2⁷ = 13212120312103 is a prime.

It is a super-2 number, since 2×13212120312231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212120312631) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 59514055350 + ... + 59514055571.

It is an arithmetic number, because the mean of its divisors is an integer number (2261534107518).

Almost surely, 2^{13212120312231} is an apocalyptic number.

13212120312231 is a deficient number, since it is larger than the sum of its proper divisors (4880152547913).

13212120312231 is a wasteful number, since it uses less digits than its factorization.

13212120312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119028110961.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 13212120312231 its reverse (13221302121231), we get a palindrome (26433422433462).

The spelling of 13212120312231 in words is "thirteen trillion, two hundred twelve billion, one hundred twenty million, three hundred twelve thousand, two hundred thirty-one".