111220412 has 12 divisors (see below), whose sum is σ = 195090336. Its totient is φ = 55480320.

The previous prime is 111220411. The next prime is 111220427. The reversal of 111220412 is 214022111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30533 + ... + 33980.

It is an arithmetic number, because the mean of its divisors is an integer number (16257528).

Almost surely, 2^111220412 is an apocalyptic number.

It is an amenable number.

111220412 is a deficient number, since it is larger than the sum of its proper divisors (83869924).

111220412 is a wasteful number, since it uses less digits than its factorization.

111220412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64948 (or 64946 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 111220412 is about 10546.1088558767. The cubic root of 111220412 is about 480.9074442671.

Adding to 111220412 its reverse (214022111), we get a palindrome (325242523).

The spelling of 111220412 in words is "one hundred eleven million, two hundred twenty thousand, four hundred twelve".