21113432410 has 16 divisors (see below), whose sum is σ = 43433346816. Its totient is φ = 7238891088.

The previous prime is 21113432399. The next prime is 21113432441. The reversal of 21113432410 is 1423431112.

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, 150810162 + ... + 150810301.

It is an arithmetic number, because the mean of its divisors is an integer number (2714584176).

Almost surely, 2^21113432410 is an apocalyptic number.

21113432410 is an abundant number, since it is smaller than the sum of its proper divisors (22319914406).

21113432410 is a wasteful number, since it uses less digits than its factorization.

21113432410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301620477.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21113432410 its reverse (1423431112), we get a palindrome (22536863522).

The spelling of 21113432410 in words is "twenty-one billion, one hundred thirteen million, four hundred thirty-two thousand, four hundred ten".