1440223021013 has 8 divisors (see below), whose sum is σ = 1645994501760. Its totient is φ = 1234457874000.

The previous prime is 1440223020983. The next prime is 1440223021033. The reversal of 1440223021013 is 3101203220441.

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 1440223021013 - 2²⁰ = 1440221972437 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1440223021013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440223021033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1085738 + ... + 2014763.

It is an arithmetic number, because the mean of its divisors is an integer number (205749312720).

Almost surely, 2^{1440223021013} is an apocalyptic number.

It is an amenable number.

1440223021013 is a deficient number, since it is larger than the sum of its proper divisors (205771480747).

1440223021013 is an equidigital number, since it uses as much as digits as its factorization.

1440223021013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3166867.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1440223021013 its reverse (3101203220441), we get a palindrome (4541426241454).

The spelling of 1440223021013 in words is "one trillion, four hundred forty billion, two hundred twenty-three million, twenty-one thousand, thirteen".