111231132112 has 40 divisors (see below), whose sum is σ = 218006622080. Its totient is φ = 54973365120.

The previous prime is 111231132101. The next prime is 111231132139. The reversal of 111231132112 is 211231132111.

It is a self number, because there is not a number n which added to its sum of digits gives 111231132112.

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, 829189 + ... + 953947.

It is an arithmetic number, because the mean of its divisors is an integer number (5450165552).

Almost surely, 2^111231132112 is an apocalyptic number.

It is an amenable number.

111231132112 is a deficient number, since it is larger than the sum of its proper divisors (106775489968).

111231132112 is a wasteful number, since it uses less digits than its factorization.

111231132112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125411 (or 125405 counting only the distinct ones).

The product of its digits is 72, while the sum is 19.

Adding to 111231132112 its reverse (211231132111), we get a palindrome (322462264223).

Subtracting 111231132112 from its reverse (211231132111), we obtain a palindrome (99999999999).

The spelling of 111231132112 in words is "one hundred eleven billion, two hundred thirty-one million, one hundred thirty-two thousand, one hundred twelve".