14421210220521 has 24 divisors (see below), whose sum is σ = 22433160387456. Its totient is φ = 8874524953440.

The previous prime is 14421210220481. The next prime is 14421210220553. The reversal of 14421210220521 is 12502201212441.

14421210220521 is a `hidden beast` number, since 1 + 4 + 4 + 2 + 12 + 102 + 20 + 521 = 666.

It is not a de Polignac number, because 14421210220521 - 2⁶ = 14421210220457 is a prime.

It is a super-2 number, since 2×14421210220521² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14421210230521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18798256 + ... + 19550366.

It is an arithmetic number, because the mean of its divisors is an integer number (934715016144).

Almost surely, 2^{14421210220521} is an apocalyptic number.

It is an amenable number.

14421210220521 is a deficient number, since it is larger than the sum of its proper divisors (8011950166935).

14421210220521 is a wasteful number, since it uses less digits than its factorization.

14421210220521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916013 (or 916010 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 14421210220521 its reverse (12502201212441), we get a palindrome (26923411432962).

The spelling of 14421210220521 in words is "fourteen trillion, four hundred twenty-one billion, two hundred ten million, two hundred twenty thousand, five hundred twenty-one".