21364133 has 8 divisors (see below), whose sum is σ = 25076352. Its totient is φ = 17816976.

The previous prime is 21364127. The next prime is 21364139. The reversal of 21364133 is 33146312.

It is an interprime number because it is at equal distance from previous prime (21364127) and next prime (21364139).

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 21364133 - 2⁸ = 21363877 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21364099 and 21364108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21364139) 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, 40985 + ... + 41502.

It is an arithmetic number, because the mean of its divisors is an integer number (3134544).

Almost surely, 2^21364133 is an apocalyptic number.

It is an amenable number.

21364133 is a deficient number, since it is larger than the sum of its proper divisors (3712219).

21364133 is an equidigital number, since it uses as much as digits as its factorization.

21364133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82531.

The product of its digits is 1296, while the sum is 23.

The square root of 21364133 is about 4622.1351126941. The cubic root of 21364133 is about 277.4779161605.

It can be divided in two parts, 213 and 64133, that added together give a palindrome (64346).

The spelling of 21364133 in words is "twenty-one million, three hundred sixty-four thousand, one hundred thirty-three".