111111120210023 has 4 divisors (see below), whose sum is σ = 115942038480048. Its totient is φ = 106280201940000.

The previous prime is 111111120209993. The next prime is 111111120210031. The reversal of 111111120210023 is 320012021111111.

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-111111120210023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111111120209983 and 111111120210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111126210023) 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, 2415459134978 + ... + 2415459135023.

It is an arithmetic number, because the mean of its divisors is an integer number (28985509620012).

Almost surely, 2^{111111120210023} is an apocalyptic number.

111111120210023 is a deficient number, since it is larger than the sum of its proper divisors (4830918270025).

111111120210023 is an equidigital number, since it uses as much as digits as its factorization.

111111120210023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830918270024.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 111111120210023 its reverse (320012021111111), we get a palindrome (431123141321134).

The spelling of 111111120210023 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred twenty million, two hundred ten thousand, twenty-three".