21100213341344 has 48 divisors (see below), whose sum is σ = 41555934475776. Its totient is φ = 10546326086400.

The previous prime is 21100213341313. The next prime is 21100213341371. The reversal of 21100213341344 is 44314331200112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1843290629 + ... + 1843302075.

It is an arithmetic number, because the mean of its divisors is an integer number (865748634912).

Almost surely, 2^{21100213341344} is an apocalyptic number.

It is an amenable number.

21100213341344 is a deficient number, since it is larger than the sum of its proper divisors (20455721134432).

21100213341344 is a wasteful number, since it uses less digits than its factorization.

21100213341344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27069 (or 27061 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 21100213341344 its reverse (44314331200112), we get a palindrome (65414544541456).

The spelling of 21100213341344 in words is "twenty-one trillion, one hundred billion, two hundred thirteen million, three hundred forty-one thousand, three hundred forty-four".