21113420110 has 16 divisors (see below), whose sum is σ = 38887974576. Its totient is φ = 8248963968.

The previous prime is 21113420093. The next prime is 21113420129. The reversal of 21113420110 is 1102431112.

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, 24550059 + ... + 24550918.

It is an arithmetic number, because the mean of its divisors is an integer number (2430498411).

Almost surely, 2^21113420110 is an apocalyptic number.

21113420110 is a deficient number, since it is larger than the sum of its proper divisors (17774554466).

21113420110 is a wasteful number, since it uses less digits than its factorization.

21113420110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49101027.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21113420110 its reverse (1102431112), we get a palindrome (22215851222).

The spelling of 21113420110 in words is "twenty-one billion, one hundred thirteen million, four hundred twenty thousand, one hundred ten".