214622321 has 2 divisors, whose sum is σ = 214622322. Its totient is φ = 214622320.

The previous prime is 214622293. The next prime is 214622327. The reversal of 214622321 is 123226412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212110096 + 2512225 = 14564^2 + 1585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214622321 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (214622327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107311160 + 107311161.

It is an arithmetic number, because the mean of its divisors is an integer number (107311161).

Almost surely, 2^214622321 is an apocalyptic number.

It is an amenable number.

214622321 is a deficient number, since it is larger than the sum of its proper divisors (1).

214622321 is an equidigital number, since it uses as much as digits as its factorization.

214622321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 214622321 is about 14649.9938907837. The cubic root of 214622321 is about 598.7216495977.

Adding to 214622321 its reverse (123226412), we get a palindrome (337848733).

The spelling of 214622321 in words is "two hundred fourteen million, six hundred twenty-two thousand, three hundred twenty-one".