111311010122020 has 24 divisors (see below), whose sum is σ = 243916300442304. Its totient is φ = 42588560394336.

The previous prime is 111311010122009. The next prime is 111311010122047. The reversal of 111311010122020 is 20221010113111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111311010121985 and 111311010122003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120990227934 + ... + 120990228853.

It is an arithmetic number, because the mean of its divisors is an integer number (10163179185096).

Almost surely, 2^{111311010122020} is an apocalyptic number.

111311010122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111311010122020 is an abundant number, since it is smaller than the sum of its proper divisors (132605290320284).

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

111311010122020 is a wasteful number, since it uses less digits than its factorization.

111311010122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241980456819 (or 241980456817 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111311010122020 its reverse (20221010113111), we get a palindrome (131532020235131).

The spelling of 111311010122020 in words is "one hundred eleven trillion, three hundred eleven billion, ten million, one hundred twenty-two thousand, twenty".