4442023212421 has 2 divisors, whose sum is σ = 4442023212422. Its totient is φ = 4442023212420.

The previous prime is 4442023212401. The next prime is 4442023212449. The reversal of 4442023212421 is 1242123202444.

4442023212421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4428541448100 + 13481764321 = 2104410^2 + 116111^2 .

It is a cyclic number.

It is not a de Polignac number, because 4442023212421 - 2¹⁵ = 4442023179653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4442023212401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2221011606210 + 2221011606211.

It is an arithmetic number, because the mean of its divisors is an integer number (2221011606211).

Almost surely, 2^{4442023212421} is an apocalyptic number.

It is an amenable number.

4442023212421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4442023212421 is an equidigital number, since it uses as much as digits as its factorization.

4442023212421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 4442023212421 its reverse (1242123202444), we get a palindrome (5684146414865).

The spelling of 4442023212421 in words is "four trillion, four hundred forty-two billion, twenty-three million, two hundred twelve thousand, four hundred twenty-one".