20001227 has 2 divisors, whose sum is σ = 20001228. Its totient is φ = 20001226.

The previous prime is 20001217. The next prime is 20001239. The reversal of 20001227 is 72210002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20001227 - 2⁸ = 20000971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20001217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000613 + 10000614.

It is an arithmetic number, because the mean of its divisors is an integer number (10000614).

Almost surely, 2^20001227 is an apocalyptic number.

20001227 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001227 is an equidigital number, since it uses as much as digits as its factorization.

20001227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 20001227 is about 4472.2731356660. The cubic root of 20001227 is about 271.4473125300.

Adding to 20001227 its reverse (72210002), we get a palindrome (92211229).

The spelling of 20001227 in words is "twenty million, one thousand, two hundred twenty-seven".