1244120201 has 2 divisors, whose sum is σ = 1244120202. Its totient is φ = 1244120200.

The previous prime is 1244120191. The next prime is 1244120237. The reversal of 1244120201 is 1020214421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 931714576 + 312405625 = 30524^2 + 17675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244120201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1244120201.

It is not a weakly prime, because it can be changed into another prime (1244120261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622060100 + 622060101.

It is an arithmetic number, because the mean of its divisors is an integer number (622060101).

Almost surely, 2^1244120201 is an apocalyptic number.

It is an amenable number.

1244120201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244120201 is an equidigital number, since it uses as much as digits as its factorization.

1244120201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1244120201 is about 35272.0881292843. The cubic root of 1244120201 is about 1075.5256707240.

Adding to 1244120201 its reverse (1020214421), we get a palindrome (2264334622).

The spelling of 1244120201 in words is "one billion, two hundred forty-four million, one hundred twenty thousand, two hundred one".