111021220120122 has 320 divisors, whose sum is σ = 285176801758464. Its totient is φ = 32112074419200.

The previous prime is 111021220120117. The next prime is 111021220120141. The reversal of 111021220120122 is 221021022120111.

111021220120122 is a `hidden beast` number, since 1 + 110 + 212 + 201 + 20 + 122 = 666.

It is a super-2 number, since 2×111021220120122² (a number of 29 digits) contains 22 as substring.

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 = 111021220120095 and 111021220120104.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 7629792747 + ... + 7629807297.

Almost surely, 2^{111021220120122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111021220120122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142588400879232).

111021220120122 is an abundant number, since it is smaller than the sum of its proper divisors (174155581638342).

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

111021220120122 is an equidigital number, since it uses as much as digits as its factorization.

111021220120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15487 (or 15463 counting only the distinct ones).

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

Adding to 111021220120122 its reverse (221021022120111), we get a palindrome (332042242240233).

The spelling of 111021220120122 in words is "one hundred eleven trillion, twenty-one billion, two hundred twenty million, one hundred twenty thousand, one hundred twenty-two".