2112341440 has 112 divisors (see below), whose sum is σ = 5676778080. Its totient is φ = 741601280.

The previous prime is 2112341401. The next prime is 2112341449. The reversal of 2112341440 is 441432112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112341449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91734 + ... + 112426.

Almost surely, 2^2112341440 is an apocalyptic number.

2112341440 is a gapful number since it is divisible by the number (20) 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 2112341440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2838389040).

2112341440 is an abundant number, since it is smaller than the sum of its proper divisors (3564436640).

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

2112341440 is a wasteful number, since it uses less digits than its factorization.

2112341440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20750 (or 20740 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 2112341440 is about 45960.2158393539. The cubic root of 2112341440 is about 1283.0828684572.

Adding to 2112341440 its reverse (441432112), we get a palindrome (2553773552).

The spelling of 2112341440 in words is "two billion, one hundred twelve million, three hundred forty-one thousand, four hundred forty".