111123440212 has 6 divisors (see below), whose sum is σ = 194466020378. Its totient is φ = 55561720104.

The previous prime is 111123440179. The next prime is 111123440231. The reversal of 111123440212 is 212044321111.

It can be written as a sum of positive squares in only one way, i.e., 106905457296 + 4217982916 = 326964^2 + 64946^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13890430023 + ... + 13890430030.

Almost surely, 2^111123440212 is an apocalyptic number.

It is an amenable number.

111123440212 is a deficient number, since it is larger than the sum of its proper divisors (83342580166).

111123440212 is a wasteful number, since it uses less digits than its factorization.

111123440212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27780860057 (or 27780860055 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 111123440212 its reverse (212044321111), we get a palindrome (323167761323).

The spelling of 111123440212 in words is "one hundred eleven billion, one hundred twenty-three million, four hundred forty thousand, two hundred twelve".