1244213322311 has 4 divisors (see below), whose sum is σ = 1244287087824. Its totient is φ = 1244139556800.

The previous prime is 1244213322307. The next prime is 1244213322353. The reversal of 1244213322311 is 1132233124421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1244213322311 - 2² = 1244213322307 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 (1244213322301) by changing a digit.

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, 36857450 + ... + 36891191.

It is an arithmetic number, because the mean of its divisors is an integer number (311071771956).

Almost surely, 2^{1244213322311} is an apocalyptic number.

1244213322311 is a deficient number, since it is larger than the sum of its proper divisors (73765513).

1244213322311 is an equidigital number, since it uses as much as digits as its factorization.

1244213322311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73765512.

The product of its digits is 6912, while the sum is 29.

Adding to 1244213322311 its reverse (1132233124421), we get a palindrome (2376446446732).

The spelling of 1244213322311 in words is "one trillion, two hundred forty-four billion, two hundred thirteen million, three hundred twenty-two thousand, three hundred eleven".