1312221112323 has 32 divisors (see below), whose sum is σ = 1922695998720. Its totient is φ = 789449379840.

The previous prime is 1312221112313. The next prime is 1312221112339. The reversal of 1312221112323 is 3232111222131.

It is not a de Polignac number, because 1312221112323 - 2¹⁷ = 1312220981251 is a prime.

It is a super-2 number, since 2×1312221112323² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312221112293 and 1312221112302.

It is not an unprimeable number, because it can be changed into a prime (1312221112313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39950115 + ... + 39982947.

It is an arithmetic number, because the mean of its divisors is an integer number (60084249960).

Almost surely, 2^{1312221112323} is an apocalyptic number.

1312221112323 is a deficient number, since it is larger than the sum of its proper divisors (610474886397).

1312221112323 is a wasteful number, since it uses less digits than its factorization.

1312221112323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41699.

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

Adding to 1312221112323 its reverse (3232111222131), we get a palindrome (4544332334454).

The spelling of 1312221112323 in words is "one trillion, three hundred twelve billion, two hundred twenty-one million, one hundred twelve thousand, three hundred twenty-three".