14911021 has 2 divisors, whose sum is σ = 14911022. Its totient is φ = 14911020.

The previous prime is 14911019. The next prime is 14911049. The reversal of 14911021 is 12011941.

14911021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11634921 + 3276100 = 3411^2 + 1810^2 .

It is an emirp because it is prime and its reverse (12011941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14911021 - 2¹ = 14911019 is a prime.

Together with 14911019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 14911021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14911081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7455510 + 7455511.

It is an arithmetic number, because the mean of its divisors is an integer number (7455511).

Almost surely, 2^14911021 is an apocalyptic number.

It is an amenable number.

14911021 is a deficient number, since it is larger than the sum of its proper divisors (1).

14911021 is an equidigital number, since it uses as much as digits as its factorization.

14911021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 14911021 is about 3861.4791207515. The cubic root of 14911021 is about 246.1325931596.

Adding to 14911021 its reverse (12011941), we get a palindrome (26922962).

The spelling of 14911021 in words is "fourteen million, nine hundred eleven thousand, twenty-one".