21110424104 has 32 divisors (see below), whose sum is σ = 49349044800. Its totient is φ = 8224840320.

The previous prime is 21110424103. The next prime is 21110424131. The reversal of 21110424104 is 40142401112.

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, 17134469 + ... + 17135700.

It is an arithmetic number, because the mean of its divisors is an integer number (1542157650).

Almost surely, 2^21110424104 is an apocalyptic number.

It is an amenable number.

21110424104 is an abundant number, since it is smaller than the sum of its proper divisors (28238620696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110424104 is a wasteful number, since it uses less digits than its factorization.

21110424104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34270193 (or 34270189 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21110424104 its reverse (40142401112), we get a palindrome (61252825216).

The spelling of 21110424104 in words is "twenty-one billion, one hundred ten million, four hundred twenty-four thousand, one hundred four".