14221511 has 2 divisors, whose sum is σ = 14221512. Its totient is φ = 14221510.

The previous prime is 14221499. The next prime is 14221517. The reversal of 14221511 is 11512241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 14221511 - 2¹⁴ = 14205127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14221511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14221517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7110755 + 7110756.

It is an arithmetic number, because the mean of its divisors is an integer number (7110756).

Almost surely, 2^14221511 is an apocalyptic number.

14221511 is a deficient number, since it is larger than the sum of its proper divisors (1).

14221511 is an equidigital number, since it uses as much as digits as its factorization.

14221511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80, while the sum is 17.

The square root of 14221511 is about 3771.1418695138. The cubic root of 14221511 is about 242.2787069669.

Adding to 14221511 its reverse (11512241), we get a palindrome (25733752).

The spelling of 14221511 in words is "fourteen million, two hundred twenty-one thousand, five hundred eleven".