111320212 has 24 divisors (see below), whose sum is σ = 201940200. Its totient is φ = 53630976.

The previous prime is 111320203. The next prime is 111320239. The reversal of 111320212 is 212023111.

It can be written as a sum of positive squares in 4 ways, for example, as 15397776 + 95922436 = 3924^2 + 9794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111320192 and 111320201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107248 + ... + 108280.

It is an arithmetic number, because the mean of its divisors is an integer number (8414175).

Almost surely, 2^111320212 is an apocalyptic number.

It is an amenable number.

111320212 is a deficient number, since it is larger than the sum of its proper divisors (90619988).

111320212 is a wasteful number, since it uses less digits than its factorization.

111320212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995 (or 1993 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 111320212 is about 10550.8393978868. The cubic root of 111320212 is about 481.0512434546.

Adding to 111320212 its reverse (212023111), we get a palindrome (323343323).

The spelling of 111320212 in words is "one hundred eleven million, three hundred twenty thousand, two hundred twelve".