2112221111130 has 144 divisors (see below), whose sum is σ = 5963576197176. Its totient is φ = 518457139200.

The previous prime is 2112221111107. The next prime is 2112221111131. The reversal of 2112221111130 is 311111222112.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 282123509409 + 1830097601721 = 531153^2 + 1352811^2 .

It is a super-2 number, since 2×2112221111130² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2112221111131) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5172430 + ... + 5565830.

Almost surely, 2^{2112221111130} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112221111130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2981788098588).

2112221111130 is an abundant number, since it is smaller than the sum of its proper divisors (3851355086046).

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

2112221111130 is a wasteful number, since it uses less digits than its factorization.

2112221111130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393793 (or 393777 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 2112221111130 its reverse (311111222112), we get a palindrome (2423332333242).

The spelling of 2112221111130 in words is "two trillion, one hundred twelve billion, two hundred twenty-one million, one hundred eleven thousand, one hundred thirty".