111213013012321 has 4 divisors (see below), whose sum is σ = 121323286922544. Its totient is φ = 101102739102100.

The previous prime is 111213013012313. The next prime is 111213013012379. The reversal of 111213013012321 is 123210310312111.

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 111213013012321 - 2³ = 111213013012313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111213013012292 and 111213013012301.

It is not an unprimeable number, because it can be changed into a prime (111213013012301) 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, 5055136955095 + ... + 5055136955116.

It is an arithmetic number, because the mean of its divisors is an integer number (30330821730636).

Almost surely, 2^{111213013012321} is an apocalyptic number.

111213013012321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111213013012321 is a deficient number, since it is larger than the sum of its proper divisors (10110273910223).

111213013012321 is a wasteful number, since it uses less digits than its factorization.

111213013012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110273910222.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 111213013012321 its reverse (123210310312111), we get a palindrome (234423323324432).

The spelling of 111213013012321 in words is "one hundred eleven trillion, two hundred thirteen billion, thirteen million, twelve thousand, three hundred twenty-one".