21344344110 has 24 divisors (see below), whose sum is σ = 55495294920. Its totient is φ = 5691825072.

The previous prime is 21344344097. The next prime is 21344344111. The reversal of 21344344110 is 1144344312.

21344344110 is a `hidden beast` number, since 213 + 4 + 4 + 3 + 441 + 1 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344344111) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 118579600 + ... + 118579779.

It is an arithmetic number, because the mean of its divisors is an integer number (2312303955).

Almost surely, 2^21344344110 is an apocalyptic number.

21344344110 is an abundant number, since it is smaller than the sum of its proper divisors (34150950810).

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

21344344110 is a wasteful number, since it uses less digits than its factorization.

21344344110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237159392 (or 237159389 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 21344344110 its reverse (1144344312), we get a palindrome (22488688422).

The spelling of 21344344110 in words is "twenty-one billion, three hundred forty-four million, three hundred forty-four thousand, one hundred ten".