21110013430 has 16 divisors (see below), whose sum is σ = 41452390224. Its totient is φ = 7676368480.

The previous prime is 21110013401. The next prime is 21110013451. The reversal of 21110013430 is 3431001112.

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, 95954497 + ... + 95954716.

It is an arithmetic number, because the mean of its divisors is an integer number (2590774389).

Almost surely, 2^21110013430 is an apocalyptic number.

21110013430 is a deficient number, since it is larger than the sum of its proper divisors (20342376794).

21110013430 is a wasteful number, since it uses less digits than its factorization.

21110013430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191909231.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21110013430 its reverse (3431001112), we get a palindrome (24541014542).

The spelling of 21110013430 in words is "twenty-one billion, one hundred ten million, thirteen thousand, four hundred thirty".