1244310211999 has 4 divisors (see below), whose sum is σ = 1244603478136. Its totient is φ = 1244016945864.

The previous prime is 1244310211909. The next prime is 1244310212011. The reversal of 1244310211999 is 9991120134421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244310211999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244310211909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146626704 + ... + 146635189.

It is an arithmetic number, because the mean of its divisors is an integer number (311150869534).

Almost surely, 2^{1244310211999} is an apocalyptic number.

1244310211999 is a deficient number, since it is larger than the sum of its proper divisors (293266137).

1244310211999 is an equidigital number, since it uses as much as digits as its factorization.

1244310211999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293266136.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 1244310211999 in words is "one trillion, two hundred forty-four billion, three hundred ten million, two hundred eleven thousand, nine hundred ninety-nine".