111220020120 has 192 divisors, whose sum is σ = 367397220960. Its totient is φ = 26914877440.

The previous prime is 111220020089. The next prime is 111220020137. The reversal of 111220020120 is 21020022111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111220020096 and 111220020105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8603902 + ... + 8616818.

Almost surely, 2^111220020120 is an apocalyptic number.

111220020120 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 111220020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183698610480).

111220020120 is an abundant number, since it is smaller than the sum of its proper divisors (256177200840).

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

111220020120 is a wasteful number, since it uses less digits than its factorization.

111220020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13546 (or 13531 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111220020120 its reverse (21020022111), we get a palindrome (132240042231).

The spelling of 111220020120 in words is "one hundred eleven billion, two hundred twenty million, twenty thousand, one hundred twenty".