20115223027 has 2 divisors, whose sum is σ = 20115223028. Its totient is φ = 20115223026.

The previous prime is 20115222971. The next prime is 20115223033. The reversal of 20115223027 is 72032251102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20115223027 - 2¹⁵ = 20115190259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20115222992 and 20115223010.

It is not a weakly prime, because it can be changed into another prime (20115223057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10057611513 + 10057611514.

It is an arithmetic number, because the mean of its divisors is an integer number (10057611514).

Almost surely, 2^20115223027 is an apocalyptic number.

20115223027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20115223027 is an equidigital number, since it uses as much as digits as its factorization.

20115223027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

Adding to 20115223027 its reverse (72032251102), we get a palindrome (92147474129).

The spelling of 20115223027 in words is "twenty billion, one hundred fifteen million, two hundred twenty-three thousand, twenty-seven".