4243221214279 has 2 divisors, whose sum is σ = 4243221214280. Its totient is φ = 4243221214278.

The previous prime is 4243221214261. The next prime is 4243221214313. The reversal of 4243221214279 is 9724121223424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4243221214279 - 2⁹ = 4243221213767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4243221214259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121610607139 + 2121610607140.

It is an arithmetic number, because the mean of its divisors is an integer number (2121610607140).

Almost surely, 2^{4243221214279} is an apocalyptic number.

4243221214279 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243221214279 is an equidigital number, since it uses as much as digits as its factorization.

4243221214279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 43.

The spelling of 4243221214279 in words is "four trillion, two hundred forty-three billion, two hundred twenty-one million, two hundred fourteen thousand, two hundred seventy-nine".