14221115421 has 16 divisors (see below), whose sum is σ = 20086603200. Its totient is φ = 8924542848.

The previous prime is 14221115411. The next prime is 14221115431. The reversal of 14221115421 is 12451112241.

It is an interprime number because it is at equal distance from previous prime (14221115411) and next prime (14221115431).

It is not a de Polignac number, because 14221115421 - 2¹¹ = 14221113373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14221115391 and 14221115400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14221115411) 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, 785616 + ... + 803513.

It is an arithmetic number, because the mean of its divisors is an integer number (1255412700).

Almost surely, 2^14221115421 is an apocalyptic number.

It is an amenable number.

14221115421 is a deficient number, since it is larger than the sum of its proper divisors (5865487779).

14221115421 is a wasteful number, since it uses less digits than its factorization.

14221115421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589308.

The product of its digits is 640, while the sum is 24.

Adding to 14221115421 its reverse (12451112241), we get a palindrome (26672227662).

The spelling of 14221115421 in words is "fourteen billion, two hundred twenty-one million, one hundred fifteen thousand, four hundred twenty-one".