2144421312 has 112 divisors (see below), whose sum is σ = 6211043712. Its totient is φ = 647572480.

The previous prime is 2144421299. The next prime is 2144421313. The reversal of 2144421312 is 2131244412.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144421313) 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, 667903 + ... + 671105.

Almost surely, 2^2144421312 is an apocalyptic number.

2144421312 is a gapful number since it is divisible by the number (22) 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 2144421312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3105521856).

2144421312 is an abundant number, since it is smaller than the sum of its proper divisors (4066622400).

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

2144421312 is a wasteful number, since it uses less digits than its factorization.

2144421312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546 (or 3536 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 2144421312 is about 46307.8968643578. The cubic root of 2144421312 is about 1289.5456028341.

Adding to 2144421312 its reverse (2131244412), we get a palindrome (4275665724).

Subtracting from 2144421312 its reverse (2131244412), we obtain a square (13176900 = 3630²).

The spelling of 2144421312 in words is "two billion, one hundred forty-four million, four hundred twenty-one thousand, three hundred twelve".