111123031211213 has 8 divisors (see below), whose sum is σ = 127169600773440. Its totient is φ = 95119424353440.

The previous prime is 111123031211183. The next prime is 111123031211219. The reversal of 111123031211213 is 312112130321111.

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

It is a cyclic number.

It is not a de Polignac number, because 111123031211213 - 2⁴⁶ = 40754287033549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111123031211219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10740670568 + ... + 10740680913.

It is an arithmetic number, because the mean of its divisors is an integer number (15896200096680).

Almost surely, 2^{111123031211213} is an apocalyptic number.

It is an amenable number.

111123031211213 is a deficient number, since it is larger than the sum of its proper divisors (16046569562227).

111123031211213 is an equidigital number, since it uses as much as digits as its factorization.

111123031211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21481352227.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 111123031211213 its reverse (312112130321111), we get a palindrome (423235161532324).

The spelling of 111123031211213 in words is "one hundred eleven trillion, one hundred twenty-three billion, thirty-one million, two hundred eleven thousand, two hundred thirteen".