14425451221 has 2 divisors, whose sum is σ = 14425451222. Its totient is φ = 14425451220.

The previous prime is 14425451219. The next prime is 14425451267. The reversal of 14425451221 is 12215452441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11412648900 + 3012802321 = 106830^2 + 54889^2 .

It is a cyclic number.

It is not a de Polignac number, because 14425451221 - 2¹ = 14425451219 is a prime.

Together with 14425451219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14425451921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7212725610 + 7212725611.

It is an arithmetic number, because the mean of its divisors is an integer number (7212725611).

Almost surely, 2^14425451221 is an apocalyptic number.

It is an amenable number.

14425451221 is a deficient number, since it is larger than the sum of its proper divisors (1).

14425451221 is an equidigital number, since it uses as much as digits as its factorization.

14425451221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12800, while the sum is 31.

The spelling of 14425451221 in words is "fourteen billion, four hundred twenty-five million, four hundred fifty-one thousand, two hundred twenty-one".