111223113212 has 12 divisors (see below), whose sum is σ = 194642922600. Its totient is φ = 55610849616.

The previous prime is 111223113193. The next prime is 111223113227. The reversal of 111223113212 is 212311322111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354914 + ... + 590262.

It is an arithmetic number, because the mean of its divisors is an integer number (16220243550).

Almost surely, 2^111223113212 is an apocalyptic number.

It is an amenable number.

111223113212 is a deficient number, since it is larger than the sum of its proper divisors (83419809388).

111223113212 is a wasteful number, since it uses less digits than its factorization.

111223113212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353500 (or 353498 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

Adding to 111223113212 its reverse (212311322111), we get a palindrome (323534435323).

The spelling of 111223113212 in words is "one hundred eleven billion, two hundred twenty-three million, one hundred thirteen thousand, two hundred twelve".