12210195457 has 2 divisors, whose sum is σ = 12210195458. Its totient is φ = 12210195456.

The previous prime is 12210195443. The next prime is 12210195509. The reversal of 12210195457 is 75459101221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8287553296 + 3922642161 = 91036^2 + 62631^2 .

It is a cyclic number.

It is not a de Polignac number, because 12210195457 - 2¹⁹ = 12209671169 is a prime.

It is not a weakly prime, because it can be changed into another prime (12210195427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105097728 + 6105097729.

It is an arithmetic number, because the mean of its divisors is an integer number (6105097729).

Almost surely, 2^12210195457 is an apocalyptic number.

It is an amenable number.

12210195457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210195457 is an equidigital number, since it uses as much as digits as its factorization.

12210195457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 37.

Adding to 12210195457 its reverse (75459101221), we get a palindrome (87669296678).

The spelling of 12210195457 in words is "twelve billion, two hundred ten million, one hundred ninety-five thousand, four hundred fifty-seven".