20218027 has 2 divisors, whose sum is σ = 20218028. Its totient is φ = 20218026.

The previous prime is 20218013. The next prime is 20218063. The reversal of 20218027 is 72081202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20218027 - 2¹⁵ = 20185259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20217989 and 20218007.

It is not a weakly prime, because it can be changed into another prime (20218067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10109013 + 10109014.

It is an arithmetic number, because the mean of its divisors is an integer number (10109014).

Almost surely, 2^20218027 is an apocalyptic number.

20218027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20218027 is an equidigital number, since it uses as much as digits as its factorization.

20218027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 20218027 is about 4496.4460410417. The cubic root of 20218027 is about 272.4245595391.

Adding to 20218027 its reverse (72081202), we get a palindrome (92299229).

The spelling of 20218027 in words is "twenty million, two hundred eighteen thousand, twenty-seven".