1005444223213 has 8 divisors (see below), whose sum is σ = 1024468300800. Its totient is φ = 986422124688.

The previous prime is 1005444223183. The next prime is 1005444223237. The reversal of 1005444223213 is 3123224445001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1005444223213 - 2²¹ = 1005442126061 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 (1005444223283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551668 + ... + 1521586.

It is an arithmetic number, because the mean of its divisors is an integer number (128058537600).

Almost surely, 2^{1005444223213} is an apocalyptic number.

It is an amenable number.

1005444223213 is a deficient number, since it is larger than the sum of its proper divisors (19024077587).

1005444223213 is an equidigital number, since it uses as much as digits as its factorization.

1005444223213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989531.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 1005444223213 its reverse (3123224445001), we get a palindrome (4128668668214).

The spelling of 1005444223213 in words is "one trillion, five billion, four hundred forty-four million, two hundred twenty-three thousand, two hundred thirteen".