21113002324 has 12 divisors (see below), whose sum is σ = 36973547604. Its totient is φ = 10549131584.

The previous prime is 21113002307. The next prime is 21113002349. The reversal of 21113002324 is 42320031112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13766798224 + 7346204100 = 117332^2 + 85710^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1835947 + ... + 1847410.

It is an arithmetic number, because the mean of its divisors is an integer number (3081128967).

Almost surely, 2^21113002324 is an apocalyptic number.

It is an amenable number.

21113002324 is a deficient number, since it is larger than the sum of its proper divisors (15860545280).

21113002324 is a wasteful number, since it uses less digits than its factorization.

21113002324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684794 (or 3684792 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21113002324 its reverse (42320031112), we get a palindrome (63433033436).

The spelling of 21113002324 in words is "twenty-one billion, one hundred thirteen million, two thousand, three hundred twenty-four".