4323445201421 has 2 divisors, whose sum is σ = 4323445201422. Its totient is φ = 4323445201420.

The previous prime is 4323445201367. The next prime is 4323445201457. The reversal of 4323445201421 is 1241025443234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2754653881225 + 1568791320196 = 1659715^2 + 1252514^2 .

It is a cyclic number.

It is not a de Polignac number, because 4323445201421 - 2⁶ = 4323445201357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4323445201321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2161722600710 + 2161722600711.

It is an arithmetic number, because the mean of its divisors is an integer number (2161722600711).

Almost surely, 2^{4323445201421} is an apocalyptic number.

It is an amenable number.

4323445201421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4323445201421 is an equidigital number, since it uses as much as digits as its factorization.

4323445201421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 35.

The spelling of 4323445201421 in words is "four trillion, three hundred twenty-three billion, four hundred forty-five million, two hundred one thousand, four hundred twenty-one".