111222120102012 has 120 divisors (see below), whose sum is σ = 292394225958912. Its totient is φ = 36865380420000.

The previous prime is 111222120101987. The next prime is 111222120102013. The reversal of 111222120102012 is 210201021222111.

111222120102012 is a `hidden beast` number, since 111 + 222 + 120 + 10 + 201 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222120102013) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 157017637 + ... + 157724387.

Almost surely, 2^{111222120102012} is an apocalyptic number.

111222120102012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111222120102012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146197112979456).

111222120102012 is an abundant number, since it is smaller than the sum of its proper divisors (181172105856900).

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

111222120102012 is a wasteful number, since it uses less digits than its factorization.

111222120102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709501 (or 709490 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111222120102012 its reverse (210201021222111), we get a palindrome (321423141324123).

The spelling of 111222120102012 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty million, one hundred two thousand, twelve".