1244211005255 has 4 divisors (see below), whose sum is σ = 1493053206312. Its totient is φ = 995368804200.

The previous prime is 1244211005227. The next prime is 1244211005273. The reversal of 1244211005255 is 5525001124421.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1244211005255 is a prime.

It is a super-2 number, since 2×1244211005255² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124421100521 + ... + 124421100530.

It is an arithmetic number, because the mean of its divisors is an integer number (373263301578).

Almost surely, 2^{1244211005255} is an apocalyptic number.

1244211005255 is a deficient number, since it is larger than the sum of its proper divisors (248842201057).

1244211005255 is an equidigital number, since it uses as much as digits as its factorization.

1244211005255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248842201056.

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 1244211005255 its reverse (5525001124421), we get a palindrome (6769212129676).

The spelling of 1244211005255 in words is "one trillion, two hundred forty-four billion, two hundred eleven million, five thousand, two hundred fifty-five".