12101312310321 has 16 divisors (see below), whose sum is σ = 17376308720960. Its totient is φ = 7446933391680.

The previous prime is 12101312310317. The next prime is 12101312310331. The reversal of 12101312310321 is 12301321310121.

It is not a de Polignac number, because 12101312310321 - 2² = 12101312310317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101312310331) 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, 15559335 + ... + 16318563.

It is an arithmetic number, because the mean of its divisors is an integer number (1086019295060).

Almost surely, 2^{12101312310321} is an apocalyptic number.

It is an amenable number.

12101312310321 is a deficient number, since it is larger than the sum of its proper divisors (5274996410639).

12101312310321 is a wasteful number, since it uses less digits than its factorization.

12101312310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167936.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 12101312310321 its reverse (12301321310121), we get a palindrome (24402633620442).

The spelling of 12101312310321 in words is "twelve trillion, one hundred one billion, three hundred twelve million, three hundred ten thousand, three hundred twenty-one".