21100432034 has 16 divisors (see below), whose sum is σ = 34915937760. Its totient is φ = 9483339360.

The previous prime is 21100432021. The next prime is 21100432049. The reversal of 21100432034 is 43023400112.

It is a junction number, because it is equal to n+sod(n) for n = 21100431997 and 21100432015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5386304 + ... + 5390219.

It is an arithmetic number, because the mean of its divisors is an integer number (2182246110).

Almost surely, 2^21100432034 is an apocalyptic number.

21100432034 is a deficient number, since it is larger than the sum of its proper divisors (13815505726).

21100432034 is a wasteful number, since it uses less digits than its factorization.

21100432034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10776625.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21100432034 its reverse (43023400112), we get a palindrome (64123832146).

The spelling of 21100432034 in words is "twenty-one billion, one hundred million, four hundred thirty-two thousand, thirty-four".