4424021411521 has 8 divisors (see below), whose sum is σ = 4442934245760. Its totient is φ = 4405111930128.

The previous prime is 4424021411429. The next prime is 4424021411527. The reversal of 4424021411521 is 1251141204244.

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 4424021411521 - 2¹⁹ = 4424020887233 is a prime.

It is a super-2 number, since 2×4424021411521² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4424021411527) 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, 1824430 + ... + 3489496.

It is an arithmetic number, because the mean of its divisors is an integer number (555366780720).

Almost surely, 2^{4424021411521} is an apocalyptic number.

It is an amenable number.

4424021411521 is a deficient number, since it is larger than the sum of its proper divisors (18912834239).

4424021411521 is a wasteful number, since it uses less digits than its factorization.

4424021411521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676423.

The product of its (nonzero) digits is 10240, while the sum is 31.

Adding to 4424021411521 its reverse (1251141204244), we get a palindrome (5675162615765).

The spelling of 4424021411521 in words is "four trillion, four hundred twenty-four billion, twenty-one million, four hundred eleven thousand, five hundred twenty-one".