7104421724521 has 16 divisors (see below), whose sum is σ = 7762876486848. Its totient is φ = 6448071873600.

The previous prime is 7104421724507. The next prime is 7104421724563. The reversal of 7104421724521 is 1254271244017.

It is a cyclic number.

It is not a de Polignac number, because 7104421724521 - 2¹¹ = 7104421722473 is a prime.

It is a super-2 number, since 2×7104421724521² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7104421724221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27609171 + ... + 27865303.

It is an arithmetic number, because the mean of its divisors is an integer number (485179780428).

Almost surely, 2^{7104421724521} is an apocalyptic number.

It is an amenable number.

7104421724521 is a deficient number, since it is larger than the sum of its proper divisors (658454762327).

7104421724521 is a wasteful number, since it uses less digits than its factorization.

7104421724521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260232.

The product of its (nonzero) digits is 125440, while the sum is 40.

Adding to 7104421724521 its reverse (1254271244017), we get a palindrome (8358692968538).

The spelling of 7104421724521 in words is "seven trillion, one hundred four billion, four hundred twenty-one million, seven hundred twenty-four thousand, five hundred twenty-one".