21102340044104 has 64 divisors (see below), whose sum is σ = 44558904729600. Its totient is φ = 9282003393600.

The previous prime is 21102340044077. The next prime is 21102340044109. The reversal of 21102340044104 is 40144004320112.

It is not an unprimeable number, because it can be changed into a prime (21102340044109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47571059 + ... + 48012605.

It is an arithmetic number, because the mean of its divisors is an integer number (696232886400).

Almost surely, 2^{21102340044104} is an apocalyptic number.

It is an amenable number.

21102340044104 is an abundant number, since it is smaller than the sum of its proper divisors (23456564685496).

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

21102340044104 is a wasteful number, since it uses less digits than its factorization.

21102340044104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459114 (or 459110 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21102340044104 its reverse (40144004320112), we get a palindrome (61246344364216).

The spelling of 21102340044104 in words is "twenty-one trillion, one hundred two billion, three hundred forty million, forty-four thousand, one hundred four".