21214410434 has 16 divisors (see below), whose sum is σ = 36395545536. Its totient is φ = 9084894000.

The previous prime is 21214410421. The next prime is 21214410473. The reversal of 21214410434 is 43401441212.

It is a Curzon number.

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, 564152 + ... + 600579.

It is an arithmetic number, because the mean of its divisors is an integer number (2274721596).

Almost surely, 2^21214410434 is an apocalyptic number.

21214410434 is a deficient number, since it is larger than the sum of its proper divisors (15181135102).

21214410434 is a wasteful number, since it uses less digits than its factorization.

21214410434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166041.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21214410434 its reverse (43401441212), we get a palindrome (64615851646).

The spelling of 21214410434 in words is "twenty-one billion, two hundred fourteen million, four hundred ten thousand, four hundred thirty-four".