214244331221 has 2 divisors, whose sum is σ = 214244331222. Its totient is φ = 214244331220.

The previous prime is 214244331181. The next prime is 214244331241. The reversal of 214244331221 is 122133442412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213864627025 + 379704196 = 462455^2 + 19486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214244331221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214244331241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107122165610 + 107122165611.

It is an arithmetic number, because the mean of its divisors is an integer number (107122165611).

Almost surely, 2^214244331221 is an apocalyptic number.

It is an amenable number.

214244331221 is a deficient number, since it is larger than the sum of its proper divisors (1).

214244331221 is an equidigital number, since it uses as much as digits as its factorization.

214244331221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 29.

Adding to 214244331221 its reverse (122133442412), we get a palindrome (336377773633).

The spelling of 214244331221 in words is "two hundred fourteen billion, two hundred forty-four million, three hundred thirty-one thousand, two hundred twenty-one".