1312100123201 has 32 divisors (see below), whose sum is σ = 1544853811200. Its totient is φ = 1091182285440.

The previous prime is 1312100123197. The next prime is 1312100123203. The reversal of 1312100123201 is 1023210012131.

It is a cyclic number.

It is not a de Polignac number, because 1312100123201 - 2² = 1312100123197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312100123201.

It is not an unprimeable number, because it can be changed into a prime (1312100123203) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 108674501 + ... + 108686573.

It is an arithmetic number, because the mean of its divisors is an integer number (48276681600).

Almost surely, 2^{1312100123201} is an apocalyptic number.

It is an amenable number.

1312100123201 is a deficient number, since it is larger than the sum of its proper divisors (232753687999).

1312100123201 is a wasteful number, since it uses less digits than its factorization.

1312100123201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15549.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1312100123201 its reverse (1023210012131), we get a palindrome (2335310135332).

The spelling of 1312100123201 in words is "one trillion, three hundred twelve billion, one hundred million, one hundred twenty-three thousand, two hundred one".