111122202212120 has 256 divisors, whose sum is σ = 283388695632000. Its totient is φ = 38845026304000.

The previous prime is 111122202212107. The next prime is 111122202212129. The reversal of 111122202212120 is 21212202221111.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 111122202212092 and 111122202212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122202212129) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4146182720 + ... + 4146209520.

Almost surely, 2^{111122202212120} is an apocalyptic number.

111122202212120 is a gapful number since it is divisible by the number (10) 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 111122202212120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141694347816000).

111122202212120 is an abundant number, since it is smaller than the sum of its proper divisors (172266493419880).

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

111122202212120 is a wasteful number, since it uses less digits than its factorization.

111122202212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28254 (or 28250 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111122202212120 its reverse (21212202221111), we get a palindrome (132334404433231).

The spelling of 111122202212120 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred two million, two hundred twelve thousand, one hundred twenty".