1244228172097 has 2 divisors, whose sum is σ = 1244228172098. Its totient is φ = 1244228172096.

The previous prime is 1244228172071. The next prime is 1244228172137. The reversal of 1244228172097 is 7902718224421.

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., 1217048033601 + 27180138496 = 1103199^2 + 164864^2 .

It is an emirp because it is prime and its reverse (7902718224421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1244228172097 - 2¹¹ = 1244228170049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1244228172097.

It is not a weakly prime, because it can be changed into another prime (1244228172017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622114086048 + 622114086049.

It is an arithmetic number, because the mean of its divisors is an integer number (622114086049).

Almost surely, 2^{1244228172097} is an apocalyptic number.

It is an amenable number.

1244228172097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244228172097 is an equidigital number, since it uses as much as digits as its factorization.

1244228172097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 1244228172097 in words is "one trillion, two hundred forty-four billion, two hundred twenty-eight million, one hundred seventy-two thousand, ninety-seven".