14001224221 has 2 divisors, whose sum is σ = 14001224222. Its totient is φ = 14001224220.

The previous prime is 14001224213. The next prime is 14001224227. The reversal of 14001224221 is 12242210041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13809540196 + 191684025 = 117514^2 + 13845^2 .

It is a cyclic number.

It is not a de Polignac number, because 14001224221 - 2³ = 14001224213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14001224227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7000612110 + 7000612111.

It is an arithmetic number, because the mean of its divisors is an integer number (7000612111).

Almost surely, 2^14001224221 is an apocalyptic number.

It is an amenable number.

14001224221 is a deficient number, since it is larger than the sum of its proper divisors (1).

14001224221 is an equidigital number, since it uses as much as digits as its factorization.

14001224221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 14001224221 its reverse (12242210041), we get a palindrome (26243434262).

The spelling of 14001224221 in words is "fourteen billion, one million, two hundred twenty-four thousand, two hundred twenty-one".