111220122022020 has 288 divisors, whose sum is σ = 377149183617024. Its totient is φ = 26300812262400.

The previous prime is 111220122022007. The next prime is 111220122022033. The reversal of 111220122022020 is 20220221022111.

It is a happy number.

111220122022020 is a `hidden beast` number, since 1 + 1 + 1 + 2 + 201 + 220 + 220 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (111220122022007) and next prime (111220122022033).

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

It is a junction number, because it is equal to n+sod(n) for n = 111220122021984 and 111220122022002.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15091485 + ... + 21217755.

It is an arithmetic number, because the mean of its divisors is an integer number (1309545776448).

Almost surely, 2^{111220122022020} is an apocalyptic number.

111220122022020 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 111220122022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188574591808512).

111220122022020 is an abundant number, since it is smaller than the sum of its proper divisors (265929061595004).

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

111220122022020 is a wasteful number, since it uses less digits than its factorization.

111220122022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6126523 (or 6126518 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 111220122022020 its reverse (20220221022111), we get a palindrome (131440343044131).

Subtracting from 111220122022020 its reverse (20220221022111), we obtain a palindrome (90999900999909).

The spelling of 111220122022020 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred twenty-two million, twenty-two thousand, twenty".