21044410440101 has 32 divisors (see below), whose sum is σ = 22577178624000. Its totient is φ = 19557874346688.

The previous prime is 21044410439963. The next prime is 21044410440127. The reversal of 21044410440101 is 10104401444012.

It is a cyclic number.

It is not a de Polignac number, because 21044410440101 - 2¹⁴ = 21044410423717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21044410440161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1433242706 + ... + 1433257388.

It is an arithmetic number, because the mean of its divisors is an integer number (705536832000).

Almost surely, 2^{21044410440101} is an apocalyptic number.

It is an amenable number.

21044410440101 is a deficient number, since it is larger than the sum of its proper divisors (1532768183899).

21044410440101 is a wasteful number, since it uses less digits than its factorization.

21044410440101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21633.

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 21044410440101 its reverse (10104401444012), we get a palindrome (31148811884113).

The spelling of 21044410440101 in words is "twenty-one trillion, forty-four billion, four hundred ten million, four hundred forty thousand, one hundred one".