111222230020 has 144 divisors (see below), whose sum is σ = 269601696000. Its totient is φ = 38218199040.

The previous prime is 111222230003. The next prime is 111222230033. The reversal of 111222230020 is 20032222111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111222229976 and 111222230003.

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, 35658021 + ... + 35661139.

It is an arithmetic number, because the mean of its divisors is an integer number (1872234000).

Almost surely, 2^111222230020 is an apocalyptic number.

111222230020 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 111222230020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134800848000).

111222230020 is an abundant number, since it is smaller than the sum of its proper divisors (158379465980).

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

111222230020 is a wasteful number, since it uses less digits than its factorization.

111222230020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626 (or 3605 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 111222230020 its reverse (20032222111), we get a palindrome (131254452131).

The spelling of 111222230020 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred thirty thousand, twenty".