21113302132 has 24 divisors (see below), whose sum is σ = 41884690400. Its totient is φ = 9231726816.

The previous prime is 21113302121. The next prime is 21113302169. The reversal of 21113302132 is 23120331112.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 7 ways as a sum of consecutive naturals, for example, 10683882 + ... + 10685857.

Almost surely, 2^21113302132 is an apocalyptic number.

It is an amenable number.

21113302132 is a deficient number, since it is larger than the sum of its proper divisors (20771388268).

21113302132 is a wasteful number, since it uses less digits than its factorization.

21113302132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21369775 (or 21369773 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21113302132 its reverse (23120331112), we get a palindrome (44233633244).

The spelling of 21113302132 in words is "twenty-one billion, one hundred thirteen million, three hundred two thousand, one hundred thirty-two".