1002201321440 has 48 divisors (see below), whose sum is σ = 2582946137520. Its totient is φ = 364436843520.

The previous prime is 1002201321409. The next prime is 1002201321463. The reversal of 1002201321440 is 441231022001.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284714525 + ... + 284718044.

It is an arithmetic number, because the mean of its divisors is an integer number (53811377865).

Almost surely, 2^{1002201321440} is an apocalyptic number.

1002201321440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002201321440 is an abundant number, since it is smaller than the sum of its proper divisors (1580744816080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002201321440 is a wasteful number, since it uses less digits than its factorization.

1002201321440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569432595 (or 569432587 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1002201321440 its reverse (441231022001), we get a palindrome (1443432343441).

The spelling of 1002201321440 in words is "one trillion, two billion, two hundred one million, three hundred twenty-one thousand, four hundred forty".