111122102222020 has 24 divisors (see below), whose sum is σ = 234645676633368. Its totient is φ = 44203267180800.

The previous prime is 111122102221931. The next prime is 111122102222023. The reversal of 111122102222020 is 20222201221111.

It can be written as a sum of positive squares in 4 ways, for example, as 10165907313604 + 100956194908416 = 3188402^2 + 10047696^2 .

It is not an unprimeable number, because it can be changed into a prime (111122102222023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15348353041 + ... + 15348360280.

It is an arithmetic number, because the mean of its divisors is an integer number (9776903193057).

Almost surely, 2^{111122102222020} is an apocalyptic number.

111122102222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122102222020 is an abundant number, since it is smaller than the sum of its proper divisors (123523574411348).

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

111122102222020 is a wasteful number, since it uses less digits than its factorization.

111122102222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30696713511 (or 30696713509 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111122102222020 its reverse (20222201221111), we get a palindrome (131344303443131).

The spelling of 111122102222020 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred two million, two hundred twenty-two thousand, twenty".