21214205304403 has 8 divisors (see below), whose sum is σ = 21794166622800. Its totient is φ = 20634591587040.

The previous prime is 21214205304401. The next prime is 21214205304427. The reversal of 21214205304403 is 30440350241212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21214205304403 - 2¹ = 21214205304401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21214205304401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86776528 + ... + 87020653.

It is an arithmetic number, because the mean of its divisors is an integer number (2724270827850).

Almost surely, 2^{21214205304403} is an apocalyptic number.

21214205304403 is a deficient number, since it is larger than the sum of its proper divisors (579961318397).

21214205304403 is a wasteful number, since it uses less digits than its factorization.

21214205304403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173800517.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 21214205304403 its reverse (30440350241212), we get a palindrome (51654555545615).

The spelling of 21214205304403 in words is "twenty-one trillion, two hundred fourteen billion, two hundred five million, three hundred four thousand, four hundred three".