21063163 has 8 divisors (see below), whose sum is σ = 23512896. Its totient is φ = 18702600.

The previous prime is 21063149. The next prime is 21063169. The reversal of 21063163 is 36136012.

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 21063163 - 2⁵ = 21063131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21063169) 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, 21793 + ... + 22738.

It is an arithmetic number, because the mean of its divisors is an integer number (2939112).

Almost surely, 2^21063163 is an apocalyptic number.

21063163 is a deficient number, since it is larger than the sum of its proper divisors (2449733).

21063163 is a wasteful number, since it uses less digits than its factorization.

21063163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44585.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 21063163 is about 4589.4621689257. The cubic root of 21063163 is about 276.1687470132.

Adding to 21063163 its reverse (36136012), we get a palindrome (57199175).

The spelling of 21063163 in words is "twenty-one million, sixty-three thousand, one hundred sixty-three".