2103221112 has 64 divisors (see below), whose sum is σ = 5555107200. Its totient is φ = 661737600.

The previous prime is 2103221077. The next prime is 2103221129. The reversal of 2103221112 is 2111223012.

It is a junction number, because it is equal to n+sod(n) for n = 2103221091 and 2103221100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117987 + ... + 134637.

It is an arithmetic number, because the mean of its divisors is an integer number (86798550).

Almost surely, 2^2103221112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2103221112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2777553600).

2103221112 is an abundant number, since it is smaller than the sum of its proper divisors (3451886088).

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

2103221112 is a wasteful number, since it uses less digits than its factorization.

2103221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16956 (or 16952 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2103221112 is about 45860.8886961428. Note that the first 3 decimals coincide. The cubic root of 2103221112 is about 1281.2335747821.

Adding to 2103221112 its reverse (2111223012), we get a palindrome (4214444124).

The spelling of 2103221112 in words is "two billion, one hundred three million, two hundred twenty-one thousand, one hundred twelve".