111030121422 has 96 divisors (see below), whose sum is σ = 269420546304. Its totient is φ = 32753462400.

The previous prime is 111030121393. The next prime is 111030121459. The reversal of 111030121422 is 224121030111.

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 = 111030121395 and 111030121404.

It is a congruent number.

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, 3776463 + ... + 3805749.

It is an arithmetic number, because the mean of its divisors is an integer number (2806464024).

Almost surely, 2^111030121422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111030121422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134710273152).

111030121422 is an abundant number, since it is smaller than the sum of its proper divisors (158390424882).

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

111030121422 is a wasteful number, since it uses less digits than its factorization.

111030121422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29814 (or 29811 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 111030121422 its reverse (224121030111), we get a palindrome (335151151533).

The spelling of 111030121422 in words is "one hundred eleven billion, thirty million, one hundred twenty-one thousand, four hundred twenty-two".