1021421413344 has 24 divisors (see below), whose sum is σ = 2681231210280. Its totient is φ = 340473804416.

The previous prime is 1021421413321. The next prime is 1021421413417. The reversal of 1021421413344 is 4433141241201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

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 3 ways as a sum of consecutive naturals, for example, 5319903099 + ... + 5319903290.

It is an arithmetic number, because the mean of its divisors is an integer number (111717967095).

Almost surely, 2^{1021421413344} is an apocalyptic number.

It is an amenable number.

1021421413344 is an abundant number, since it is smaller than the sum of its proper divisors (1659809796936).

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

1021421413344 is a wasteful number, since it uses less digits than its factorization.

1021421413344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10639806402 (or 10639806394 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 1021421413344 its reverse (4433141241201), we get a palindrome (5454562654545).

The spelling of 1021421413344 in words is "one trillion, twenty-one billion, four hundred twenty-one million, four hundred thirteen thousand, three hundred forty-four".