131223221027 has 2 divisors, whose sum is σ = 131223221028. Its totient is φ = 131223221026.

The previous prime is 131223220963. The next prime is 131223221039. The reversal of 131223221027 is 720122322131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131223221027 - 2⁶ = 131223220963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131223220987 and 131223221005.

It is not a weakly prime, because it can be changed into another prime (131223241027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65611610513 + 65611610514.

It is an arithmetic number, because the mean of its divisors is an integer number (65611610514).

Almost surely, 2^131223221027 is an apocalyptic number.

131223221027 is a deficient number, since it is larger than the sum of its proper divisors (1).

131223221027 is an equidigital number, since it uses as much as digits as its factorization.

131223221027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 131223221027 its reverse (720122322131), we get a palindrome (851345543158).

The spelling of 131223221027 in words is "one hundred thirty-one billion, two hundred twenty-three million, two hundred twenty-one thousand, twenty-seven".