111212122111112 has 64 divisors (see below), whose sum is σ = 230549166777600. Its totient is φ = 49872343360000.

The previous prime is 111212122111093. The next prime is 111212122111117. The reversal of 111212122111112 is 211111221212111.

It is a super-2 number, since 2×111212122111112² (a number of 29 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (111212122111117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19766912 + ... + 24761967.

It is an arithmetic number, because the mean of its divisors is an integer number (3602330730900).

Almost surely, 2^{111212122111112} is an apocalyptic number.

It is an amenable number.

111212122111112 is an abundant number, since it is smaller than the sum of its proper divisors (119337044666488).

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

111212122111112 is a wasteful number, since it uses less digits than its factorization.

111212122111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44529278 (or 44529274 counting only the distinct ones).

The product of its digits is 32, while the sum is 20.

Adding to 111212122111112 its reverse (211111221212111), we get a palindrome (322323343323223).

The spelling of 111212122111112 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twenty-two million, one hundred eleven thousand, one hundred twelve".