21113134324 has 24 divisors (see below), whose sum is σ = 39943772960. Its totient is φ = 9730660896.

The previous prime is 21113134321. The next prime is 21113134333. The reversal of 21113134324 is 42343131112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113134321) 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 7 ways as a sum of consecutive naturals, for example, 3751302 + ... + 3756925.

Almost surely, 2^21113134324 is an apocalyptic number.

It is an amenable number.

21113134324 is a deficient number, since it is larger than the sum of its proper divisors (18830638636).

21113134324 is a wasteful number, since it uses less digits than its factorization.

21113134324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7508287 (or 7508285 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

Adding to 21113134324 its reverse (42343131112), we get a palindrome (63456265436).

The spelling of 21113134324 in words is "twenty-one billion, one hundred thirteen million, one hundred thirty-four thousand, three hundred twenty-four".