12173040221431 has 2 divisors, whose sum is σ = 12173040221432. Its totient is φ = 12173040221430.

The previous prime is 12173040221413. The next prime is 12173040221491. The reversal of 12173040221431 is 13412204037121.

Together with previous prime (12173040221413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12173040221431 - 2⁹ = 12173040220919 is a prime.

It is a super-2 number, since 2×12173040221431² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12173040221393 and 12173040221402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12173040221491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6086520110715 + 6086520110716.

It is an arithmetic number, because the mean of its divisors is an integer number (6086520110716).

Almost surely, 2^{12173040221431} is an apocalyptic number.

12173040221431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12173040221431 is an equidigital number, since it uses as much as digits as its factorization.

12173040221431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 12173040221431 its reverse (13412204037121), we get a palindrome (25585244258552).

The spelling of 12173040221431 in words is "twelve trillion, one hundred seventy-three billion, forty million, two hundred twenty-one thousand, four hundred thirty-one".