2101324440 has 64 divisors (see below), whose sum is σ = 6674801760. Its totient is φ = 527390720.

The previous prime is 2101324439. The next prime is 2101324441. The reversal of 2101324440 is 444231012.

It is an interprime number because it is at equal distance from previous prime (2101324439) and next prime (2101324441).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101324441) by changing a digit.

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, 512991 + ... + 517070.

Almost surely, 2^2101324440 is an apocalyptic number.

2101324440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101324440 is an abundant number, since it is smaller than the sum of its proper divisors (4573477320).

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

2101324440 is a wasteful number, since it uses less digits than its factorization.

2101324440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030092 (or 1030088 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2101324440 is about 45840.2054969216. The cubic root of 2101324440 is about 1280.8483227392.

Adding to 2101324440 its reverse (444231012), we get a palindrome (2545555452).

The spelling of 2101324440 in words is "two billion, one hundred one million, three hundred twenty-four thousand, four hundred forty".