4505331420021 has 4 divisors (see below), whose sum is σ = 6007108560032. Its totient is φ = 3003554280012.

The previous prime is 4505331420013. The next prime is 4505331420041. The reversal of 4505331420021 is 1200241335054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4505331420021 - 2³ = 4505331420013 is a prime.

It is a super-2 number, since 2×4505331420021² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4505331420041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750888570001 + ... + 750888570006.

It is an arithmetic number, because the mean of its divisors is an integer number (1501777140008).

Almost surely, 2^{4505331420021} is an apocalyptic number.

It is an amenable number.

4505331420021 is a deficient number, since it is larger than the sum of its proper divisors (1501777140011).

4505331420021 is a wasteful number, since it uses less digits than its factorization.

4505331420021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501777140010.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 4505331420021 its reverse (1200241335054), we get a palindrome (5705572755075).

The spelling of 4505331420021 in words is "four trillion, five hundred five billion, three hundred thirty-one million, four hundred twenty thousand, twenty-one".