21214242635363 has 4 divisors (see below), whose sum is σ = 21226427727648. Its totient is φ = 21202057543080.

The previous prime is 21214242635351. The next prime is 21214242635407. The reversal of 21214242635363 is 36353624241212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21214242635363 - 2⁸ = 21214242635107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21214242631363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6092543531 + ... + 6092547012.

It is an arithmetic number, because the mean of its divisors is an integer number (5306606931912).

Almost surely, 2^{21214242635363} is an apocalyptic number.

21214242635363 is a deficient number, since it is larger than the sum of its proper divisors (12185092285).

21214242635363 is a wasteful number, since it uses less digits than its factorization.

21214242635363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12185092284.

The product of its digits is 1244160, while the sum is 44.

Adding to 21214242635363 its reverse (36353624241212), we get a palindrome (57567866876575).

The spelling of 21214242635363 in words is "twenty-one trillion, two hundred fourteen billion, two hundred forty-two million, six hundred thirty-five thousand, three hundred sixty-three".