21200467 has 2 divisors, whose sum is σ = 21200468. Its totient is φ = 21200466.

The previous prime is 21200461. The next prime is 21200507. The reversal of 21200467 is 76400212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21200467 is a prime.

It is not a weakly prime, because it can be changed into another prime (21200461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600233 + 10600234.

It is an arithmetic number, because the mean of its divisors is an integer number (10600234).

Almost surely, 2^21200467 is an apocalyptic number.

21200467 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200467 is an equidigital number, since it uses as much as digits as its factorization.

21200467 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 21200467 is about 4604.3964859686. The cubic root of 21200467 is about 276.7675329386.

Adding to 21200467 its reverse (76400212), we get a palindrome (97600679).

The spelling of 21200467 in words is "twenty-one million, two hundred thousand, four hundred sixty-seven".