111222012112 has 10 divisors (see below), whose sum is σ = 215492648498. Its totient is φ = 55611006048.

The previous prime is 111222012107. The next prime is 111222012119. The reversal of 111222012112 is 211210222111.

It can be written as a sum of positive squares in only one way, i.e., 82068498576 + 29153513536 = 286476^2 + 170744^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 6951375757 = 111222012112 / (1 + 1 + 1 + 2 + 2 + 2 + 0 + 1 + 2 + 1 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222012119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3475687863 + ... + 3475687894.

Almost surely, 2^111222012112 is an apocalyptic number.

It is an amenable number.

111222012112 is a deficient number, since it is larger than the sum of its proper divisors (104270636386).

111222012112 is an equidigital number, since it uses as much as digits as its factorization.

111222012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6951375765 (or 6951375759 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111222012112 its reverse (211210222111), we get a palindrome (322432234223).

The spelling of 111222012112 in words is "one hundred eleven billion, two hundred twenty-two million, twelve thousand, one hundred twelve".