21415441330 has 32 divisors (see below), whose sum is σ = 39361255344. Its totient is φ = 8387122176.

The previous prime is 21415441321. The next prime is 21415441337. The reversal of 21415441330 is 3314451412.

It can be written as a sum of positive squares in 8 ways, for example, as 12814919209 + 8600522121 = 113203^2 + 92739^2 .

It is a super-2 number, since 2×21415441330² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21415441337) 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, 7057 + ... + 207076.

Almost surely, 2^21415441330 is an apocalyptic number.

21415441330 is a deficient number, since it is larger than the sum of its proper divisors (17945814014).

21415441330 is a wasteful number, since it uses less digits than its factorization.

21415441330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214350.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 21415441330 its reverse (3314451412), we get a palindrome (24729892742).

The spelling of 21415441330 in words is "twenty-one billion, four hundred fifteen million, four hundred forty-one thousand, three hundred thirty".