21300467 has 2 divisors, whose sum is σ = 21300468. Its totient is φ = 21300466.

The previous prime is 21300431. The next prime is 21300479. The reversal of 21300467 is 76400312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21300467 - 2⁶ = 21300403 is a prime.

It is not a weakly prime, because it can be changed into another prime (21303467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650233 + 10650234.

It is an arithmetic number, because the mean of its divisors is an integer number (10650234).

Almost surely, 2^21300467 is an apocalyptic number.

21300467 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300467 is an equidigital number, since it uses as much as digits as its factorization.

21300467 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 21300467 is about 4615.2428971832. The cubic root of 21300467 is about 277.2020100191.

Adding to 21300467 its reverse (76400312), we get a palindrome (97700779).

The spelling of 21300467 in words is "twenty-one million, three hundred thousand, four hundred sixty-seven".