14722021 has 2 divisors, whose sum is σ = 14722022. Its totient is φ = 14722020.

The previous prime is 14722013. The next prime is 14722027. The reversal of 14722021 is 12022741.

It is a happy number.

14722021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13068225 + 1653796 = 3615^2 + 1286^2 .

It is a cyclic number.

It is not a de Polignac number, because 14722021 - 2³ = 14722013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14722021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14722027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7361010 + 7361011.

It is an arithmetic number, because the mean of its divisors is an integer number (7361011).

Almost surely, 2^14722021 is an apocalyptic number.

It is an amenable number.

14722021 is a deficient number, since it is larger than the sum of its proper divisors (1).

14722021 is an equidigital number, since it uses as much as digits as its factorization.

14722021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 14722021 is about 3836.9285893798. The cubic root of 14722021 is about 245.0882425437.

Adding to 14722021 its reverse (12022741), we get a palindrome (26744762).

The spelling of 14722021 in words is "fourteen million, seven hundred twenty-two thousand, twenty-one".