12231441997 has 2 divisors, whose sum is σ = 12231441998. Its totient is φ = 12231441996.

The previous prime is 12231441991. The next prime is 12231442039. The reversal of 12231441997 is 79914413221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11930974441 + 300467556 = 109229^2 + 17334^2 .

It is an emirp because it is prime and its reverse (79914413221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12231441997 - 2⁷ = 12231441869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12231441991) 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, 6115720998 + 6115720999.

It is an arithmetic number, because the mean of its divisors is an integer number (6115720999).

Almost surely, 2^12231441997 is an apocalyptic number.

It is an amenable number.

12231441997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231441997 is an equidigital number, since it uses as much as digits as its factorization.

12231441997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The spelling of 12231441997 in words is "twelve billion, two hundred thirty-one million, four hundred forty-one thousand, nine hundred ninety-seven".