111012021223 has 4 divisors (see below), whose sum is σ = 112111150248. Its totient is φ = 109912892200.

The previous prime is 111012021143. The next prime is 111012021229. The reversal of 111012021223 is 322120210111.

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

It is a cyclic number.

It is not a de Polignac number, because 111012021223 - 2¹⁷ = 111011890151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111012021197 and 111012021206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012021229) 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, 549564361 + ... + 549564562.

It is an arithmetic number, because the mean of its divisors is an integer number (28027787562).

Almost surely, 2^111012021223 is an apocalyptic number.

111012021223 is a deficient number, since it is larger than the sum of its proper divisors (1099129025).

111012021223 is a wasteful number, since it uses less digits than its factorization.

111012021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099129024.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111012021223 its reverse (322120210111), we get a palindrome (433132231334).

The spelling of 111012021223 in words is "one hundred eleven billion, twelve million, twenty-one thousand, two hundred twenty-three".