21213363200443 has 16 divisors (see below), whose sum is σ = 21554423377920. Its totient is φ = 20875711633056.

The previous prime is 21213363200401. The next prime is 21213363200453. The reversal of 21213363200443 is 34400236331212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21213363200443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21213363200399 and 21213363200408.

It is not an unprimeable number, because it can be changed into a prime (21213363200453) 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, 6387280 + ... + 9122722.

It is an arithmetic number, because the mean of its divisors is an integer number (1347151461120).

Almost surely, 2^{21213363200443} is an apocalyptic number.

21213363200443 is a deficient number, since it is larger than the sum of its proper divisors (341060177477).

21213363200443 is a wasteful number, since it uses less digits than its factorization.

21213363200443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736066.

The product of its (nonzero) digits is 62208, while the sum is 34.

Adding to 21213363200443 its reverse (34400236331212), we get a palindrome (55613599531655).

The spelling of 21213363200443 in words is "twenty-one trillion, two hundred thirteen billion, three hundred sixty-three million, two hundred thousand, four hundred forty-three".