12311221101323 has 32 divisors (see below), whose sum is σ = 12895423782912. Its totient is φ = 11745288547200.

The previous prime is 12311221101313. The next prime is 12311221101407. The reversal of 12311221101323 is 32310112211321.

It is a happy number.

It is not a de Polignac number, because 12311221101323 - 2²⁸ = 12310952665867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12311221101313) 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, 111331286 + ... + 111441812.

It is an arithmetic number, because the mean of its divisors is an integer number (402981993216).

Almost surely, 2^{12311221101323} is an apocalyptic number.

12311221101323 is a deficient number, since it is larger than the sum of its proper divisors (584202681589).

12311221101323 is a wasteful number, since it uses less digits than its factorization.

12311221101323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111035.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12311221101323 its reverse (32310112211321), we get a palindrome (44621333312644).

The spelling of 12311221101323 in words is "twelve trillion, three hundred eleven billion, two hundred twenty-one million, one hundred one thousand, three hundred twenty-three".