14005021221 has 12 divisors (see below), whose sum is σ = 20456773740. Its totient is φ = 9231773760.

The previous prime is 14005021207. The next prime is 14005021223. The reversal of 14005021221 is 12212050041.

14005021221 is a `hidden beast` number, since 1 + 40 + 0 + 502 + 122 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4126649121 + 9878372100 = 64239^2 + 99390^2 .

It is not a de Polignac number, because 14005021221 - 2⁹ = 14005020709 is a prime.

It is a super-2 number, since 2×14005021221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 14005021194 and 14005021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14005021223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8741410 + ... + 8743011.

It is an arithmetic number, because the mean of its divisors is an integer number (1704731145).

Almost surely, 2^14005021221 is an apocalyptic number.

It is an amenable number.

14005021221 is a deficient number, since it is larger than the sum of its proper divisors (6451752519).

14005021221 is a wasteful number, since it uses less digits than its factorization.

14005021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17484516 (or 17484513 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 14005021221 its reverse (12212050041), we get a palindrome (26217071262).

The spelling of 14005021221 in words is "fourteen billion, five million, twenty-one thousand, two hundred twenty-one".