21182327 has 2 divisors, whose sum is σ = 21182328. Its totient is φ = 21182326.

The previous prime is 21182303. The next prime is 21182377. The reversal of 21182327 is 72328112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21182327 - 2²⁴ = 4405111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21182296 and 21182305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21182377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10591163 + 10591164.

It is an arithmetic number, because the mean of its divisors is an integer number (10591164).

Almost surely, 2^21182327 is an apocalyptic number.

21182327 is a deficient number, since it is larger than the sum of its proper divisors (1).

21182327 is an equidigital number, since it uses as much as digits as its factorization.

21182327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 26.

The square root of 21182327 is about 4602.4262079907. The cubic root of 21182327 is about 276.6885724820.

The spelling of 21182327 in words is "twenty-one million, one hundred eighty-two thousand, three hundred twenty-seven".