4422256123421 has 2 divisors, whose sum is σ = 4422256123422. Its totient is φ = 4422256123420.

The previous prime is 4422256123289. The next prime is 4422256123591. The reversal of 4422256123421 is 1243216522244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3398820400921 + 1023435722500 = 1843589^2 + 1011650^2 .

It is a cyclic number.

It is not a de Polignac number, because 4422256123421 - 2¹⁸ = 4422255861277 is a prime.

It is a super-2 number, since 2×4422256123421² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4422256123921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2211128061710 + 2211128061711.

It is an arithmetic number, because the mean of its divisors is an integer number (2211128061711).

Almost surely, 2^{4422256123421} is an apocalyptic number.

It is an amenable number.

4422256123421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4422256123421 is an equidigital number, since it uses as much as digits as its factorization.

4422256123421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 38.

The spelling of 4422256123421 in words is "four trillion, four hundred twenty-two billion, two hundred fifty-six million, one hundred twenty-three thousand, four hundred twenty-one".