111231220112112 has 40 divisors (see below), whose sum is σ = 288328026231504. Its totient is φ = 36950530453504.

The previous prime is 111231220112093. The next prime is 111231220112143. The reversal of 111231220112112 is 211211022132111.

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, 3954451953 + ... + 3954480080.

Almost surely, 2^{111231220112112} is an apocalyptic number.

111231220112112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111231220112112 is an abundant number, since it is smaller than the sum of its proper divisors (177096806119392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111231220112112 is a wasteful number, since it uses less digits than its factorization.

111231220112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7908932337 (or 7908932331 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 111231220112112 its reverse (211211022132111), we get a palindrome (322442242244223).

The spelling of 111231220112112 in words is "one hundred eleven trillion, two hundred thirty-one billion, two hundred twenty million, one hundred twelve thousand, one hundred twelve".