214224343422421 has 2 divisors, whose sum is σ = 214224343422422. Its totient is φ = 214224343422420.

The previous prime is 214224343422379. The next prime is 214224343422431. The reversal of 214224343422421 is 124224343422412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208734272674321 + 5490070748100 = 14447639^2 + 2343090^2 .

It is a cyclic number.

It is not a de Polignac number, because 214224343422421 - 2¹⁹ = 214224342898133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214224343422431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107112171711210 + 107112171711211.

It is an arithmetic number, because the mean of its divisors is an integer number (107112171711211).

Almost surely, 2^{214224343422421} is an apocalyptic number.

It is an amenable number.

214224343422421 is a deficient number, since it is larger than the sum of its proper divisors (1).

214224343422421 is an equidigital number, since it uses as much as digits as its factorization.

214224343422421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 589824, while the sum is 40.

Adding to 214224343422421 its reverse (124224343422412), we get a palindrome (338448686844833).

Subtracting from 214224343422421 its reverse (124224343422412), we obtain a palindrome (90000000000009).

The spelling of 214224343422421 in words is "two hundred fourteen trillion, two hundred twenty-four billion, three hundred forty-three million, four hundred twenty-two thousand, four hundred twenty-one".