21110424105 has 8 divisors (see below), whose sum is σ = 33776678592. Its totient is φ = 11258892848.

The previous prime is 21110424103. The next prime is 21110424131. The reversal of 21110424105 is 50142401112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21110424105 - 2¹ = 21110424103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21110424103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703680789 + ... + 703680818.

It is an arithmetic number, because the mean of its divisors is an integer number (4222084824).

Almost surely, 2^21110424105 is an apocalyptic number.

It is an amenable number.

21110424105 is a deficient number, since it is larger than the sum of its proper divisors (12666254487).

21110424105 is a wasteful number, since it uses less digits than its factorization.

21110424105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407361615.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 21110424105 its reverse (50142401112), we get a palindrome (71252825217).

The spelling of 21110424105 in words is "twenty-one billion, one hundred ten million, four hundred twenty-four thousand, one hundred five".