20000111311223 has 4 divisors (see below), whose sum is σ = 20274085438848. Its totient is φ = 19726137183600.

The previous prime is 20000111311211. The next prime is 20000111311241. The reversal of 20000111311223 is 32211311100002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20000111311223 is a prime.

It is a super-3 number, since 3×20000111311223³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000111311123) 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 3 ways as a sum of consecutive naturals, for example, 136987063703 + ... + 136987063848.

It is an arithmetic number, because the mean of its divisors is an integer number (5068521359712).

Almost surely, 2^{20000111311223} is an apocalyptic number.

20000111311223 is a deficient number, since it is larger than the sum of its proper divisors (273974127625).

20000111311223 is an equidigital number, since it uses as much as digits as its factorization.

20000111311223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273974127624.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20000111311223 its reverse (32211311100002), we get a palindrome (52211422411225).

The spelling of 20000111311223 in words is "twenty trillion, one hundred eleven million, three hundred eleven thousand, two hundred twenty-three".