111122120122020 has 144 divisors (see below), whose sum is σ = 391752559336320. Its totient is φ = 24968844407808.

The previous prime is 111122120121949. The next prime is 111122120122031. The reversal of 111122120122020 is 20221021221111.

111122120122020 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 221 + 201 + 220 + 20 = 666.

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 = 111122120121984 and 111122120122002.

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, 747316837 + ... + 747465516.

It is an arithmetic number, because the mean of its divisors is an integer number (2720503884280).

Almost surely, 2^{111122120122020} is an apocalyptic number.

111122120122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122120122020 is an abundant number, since it is smaller than the sum of its proper divisors (280630439214300).

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

111122120122020 is a wasteful number, since it uses less digits than its factorization.

111122120122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494782434 (or 1494782429 counting only the distinct ones).

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

Adding to 111122120122020 its reverse (20221021221111), we get a palindrome (131343141343131).

The spelling of 111122120122020 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred twenty million, one hundred twenty-two thousand, twenty".