10131221767 has 2 divisors, whose sum is σ = 10131221768. Its totient is φ = 10131221766.

The previous prime is 10131221719. The next prime is 10131221777. The reversal of 10131221767 is 76712213101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10131221767 - 2¹⁵ = 10131188999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10131221777) 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, 5065610883 + 5065610884.

It is an arithmetic number, because the mean of its divisors is an integer number (5065610884).

Almost surely, 2^10131221767 is an apocalyptic number.

10131221767 is a deficient number, since it is larger than the sum of its proper divisors (1).

10131221767 is an equidigital number, since it uses as much as digits as its factorization.

10131221767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

Adding to 10131221767 its reverse (76712213101), we get a palindrome (86843434868).

The spelling of 10131221767 in words is "ten billion, one hundred thirty-one million, two hundred twenty-one thousand, seven hundred sixty-seven".