14235653221 has 2 divisors, whose sum is σ = 14235653222. Its totient is φ = 14235653220.

The previous prime is 14235653219. The next prime is 14235653269. The reversal of 14235653221 is 12235653241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13511505121 + 724148100 = 116239^2 + 26910^2 .

It is a cyclic number.

It is not a de Polignac number, because 14235653221 - 2¹ = 14235653219 is a prime.

Together with 14235653219, 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 (14235653291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7117826610 + 7117826611.

It is an arithmetic number, because the mean of its divisors is an integer number (7117826611).

Almost surely, 2^14235653221 is an apocalyptic number.

It is an amenable number.

14235653221 is a deficient number, since it is larger than the sum of its proper divisors (1).

14235653221 is an equidigital number, since it uses as much as digits as its factorization.

14235653221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 34.

The spelling of 14235653221 in words is "fourteen billion, two hundred thirty-five million, six hundred fifty-three thousand, two hundred twenty-one".