21363101 has 8 divisors (see below), whose sum is σ = 22907520. Its totient is φ = 19850688.

The previous prime is 21363079. The next prime is 21363103. The reversal of 21363101 is 10136312.

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 21363101 - 2⁶ = 21363037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21363101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21363103) 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, 6611 + ... + 9296.

It is an arithmetic number, because the mean of its divisors is an integer number (2863440).

Almost surely, 2^21363101 is an apocalyptic number.

It is an amenable number.

21363101 is a deficient number, since it is larger than the sum of its proper divisors (1544419).

21363101 is a wasteful number, since it uses less digits than its factorization.

21363101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16003.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 21363101 is about 4622.0234746267. The cubic root of 21363101 is about 277.4734482076.

Adding to 21363101 its reverse (10136312), we get a palindrome (31499413).

The spelling of 21363101 in words is "twenty-one million, three hundred sixty-three thousand, one hundred one".