21004203200441 has 16 divisors (see below), whose sum is σ = 21433722182400. Its totient is φ = 20578794163200.

The previous prime is 21004203200437. The next prime is 21004203200471. The reversal of 21004203200441 is 14400230240012.

It is a cyclic number.

It is not a de Polignac number, because 21004203200441 - 2² = 21004203200437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21004203200471) 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, 208595855 + ... + 208696523.

It is an arithmetic number, because the mean of its divisors is an integer number (1339607636400).

Almost surely, 2^{21004203200441} is an apocalyptic number.

It is an amenable number.

21004203200441 is a deficient number, since it is larger than the sum of its proper divisors (429518981959).

21004203200441 is a wasteful number, since it uses less digits than its factorization.

21004203200441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121040.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 21004203200441 its reverse (14400230240012), we get a palindrome (35404433440453).

The spelling of 21004203200441 in words is "twenty-one trillion, four billion, two hundred three million, two hundred thousand, four hundred forty-one".