111022111220020 has 768 divisors, whose sum is σ = 338051808460800. Its totient is φ = 29479127040000.

The previous prime is 111022111219993. The next prime is 111022111220023. The reversal of 111022111220020 is 20022111220111.

It is a junction number, because it is equal to n+sod(n) for n = 111022111219976 and 111022111220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022111220023) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 11213217070 + ... + 11213226970.

It is an arithmetic number, because the mean of its divisors is an integer number (440171625600).

Almost surely, 2^{111022111220020} is an apocalyptic number.

111022111220020 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 111022111220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169025904230400).

111022111220020 is an abundant number, since it is smaller than the sum of its proper divisors (227029697240780).

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

111022111220020 is a wasteful number, since it uses less digits than its factorization.

111022111220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10720 (or 10718 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111022111220020 its reverse (20022111220111), we get a palindrome (131044222440131).

Subtracting from 111022111220020 its reverse (20022111220111), we obtain a palindrome (90999999999909).

The spelling of 111022111220020 in words is "one hundred eleven trillion, twenty-two billion, one hundred eleven million, two hundred twenty thousand, twenty".