111122222222220 has 192 divisors, whose sum is σ = 350387532214272. Its totient is φ = 26068958208000.

The previous prime is 111122222222201. The next prime is 111122222222299. The reversal of 111122222222220 is 22222222221111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 988918840 + ... + 989031200.

It is an arithmetic number, because the mean of its divisors is an integer number (1824935063616).

Almost surely, 2^{111122222222220} is an apocalyptic number.

111122222222220 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 111122222222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175193766107136).

111122222222220 is an abundant number, since it is smaller than the sum of its proper divisors (239265309992052).

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

111122222222220 is a wasteful number, since it uses less digits than its factorization.

111122222222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160752 (or 160750 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 111122222222220 its reverse (22222222221111), we get a palindrome (133344444443331).

The spelling of 111122222222220 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty".