14912021 has 2 divisors, whose sum is σ = 14912022. Its totient is φ = 14912020.

The previous prime is 14911993. The next prime is 14912041. The reversal of 14912021 is 12021941.

It is an a-pointer prime, because the next prime (14912041) can be obtained adding 14912021 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7562500 + 7349521 = 2750^2 + 2711^2 .

It is a cyclic number.

It is not a de Polignac number, because 14912021 - 2⁶ = 14911957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 14911984 and 14912002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14912041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7456010 + 7456011.

It is an arithmetic number, because the mean of its divisors is an integer number (7456011).

Almost surely, 2^14912021 is an apocalyptic number.

It is an amenable number.

14912021 is a deficient number, since it is larger than the sum of its proper divisors (1).

14912021 is an equidigital number, since it uses as much as digits as its factorization.

14912021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 14912021 is about 3861.6086026422. The cubic root of 14912021 is about 246.1380952887.

Adding to 14912021 its reverse (12021941), we get a palindrome (26933962).

The spelling of 14912021 in words is "fourteen million, nine hundred twelve thousand, twenty-one".