20012231027 has 2 divisors, whose sum is σ = 20012231028. Its totient is φ = 20012231026.

The previous prime is 20012231017. The next prime is 20012231053. The reversal of 20012231027 is 72013221002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20012231027 - 2¹² = 20012226931 is a prime.

It is a super-3 number, since 3×20012231027³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20012231017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006115513 + 10006115514.

It is an arithmetic number, because the mean of its divisors is an integer number (10006115514).

Almost surely, 2^20012231027 is an apocalyptic number.

20012231027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012231027 is an equidigital number, since it uses as much as digits as its factorization.

20012231027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 20012231027 its reverse (72013221002), we get a palindrome (92025452029).

The spelling of 20012231027 in words is "twenty billion, twelve million, two hundred thirty-one thousand, twenty-seven".