111213113131321 has 4 divisors (see below), whose sum is σ = 111213168867072. Its totient is φ = 111213057395572.

The previous prime is 111213113131303. The next prime is 111213113131349. The reversal of 111213113131321 is 123131311312111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111213113131321 - 2¹⁹ = 111213112607033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111213113131391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24759241 + ... + 28904086.

It is an arithmetic number, because the mean of its divisors is an integer number (27803292216768).

Almost surely, 2^{111213113131321} is an apocalyptic number.

It is an amenable number.

111213113131321 is a deficient number, since it is larger than the sum of its proper divisors (55735751).

111213113131321 is an equidigital number, since it uses as much as digits as its factorization.

111213113131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55735750.

The product of its digits is 324, while the sum is 25.

Adding to 111213113131321 its reverse (123131311312111), we get a palindrome (234344424443432).

The spelling of 111213113131321 in words is "one hundred eleven trillion, two hundred thirteen billion, one hundred thirteen million, one hundred thirty-one thousand, three hundred twenty-one".