1312100221323 has 8 divisors (see below), whose sum is σ = 1755165552448. Its totient is φ = 871884185544.

The previous prime is 1312100221241. The next prime is 1312100221357. The reversal of 1312100221323 is 3231220012131.

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

It is not a de Polignac number, because 1312100221323 - 2¹² = 1312100217227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312100221323.

It is not an unprimeable number, because it can be changed into a prime (1312100221363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712322761 + ... + 712324602.

It is an arithmetic number, because the mean of its divisors is an integer number (219395694056).

Almost surely, 2^{1312100221323} is an apocalyptic number.

1312100221323 is a deficient number, since it is larger than the sum of its proper divisors (443065331125).

1312100221323 is a wasteful number, since it uses less digits than its factorization.

1312100221323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424647673.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1312100221323 its reverse (3231220012131), we get a palindrome (4543320233454).

The spelling of 1312100221323 in words is "one trillion, three hundred twelve billion, one hundred million, two hundred twenty-one thousand, three hundred twenty-three".