4221434184881 has 2 divisors, whose sum is σ = 4221434184882. Its totient is φ = 4221434184880.

The previous prime is 4221434184769. The next prime is 4221434184883. The reversal of 4221434184881 is 1884814341224.

4221434184881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3827500960000 + 393933224881 = 1956400^2 + 627641^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221434184881 - 2¹⁸ = 4221433922737 is a prime.

It is a super-2 number, since 2×4221434184881² (a number of 26 digits) contains 22 as substring.

Together with 4221434184883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4221434184883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110717092440 + 2110717092441.

It is an arithmetic number, because the mean of its divisors is an integer number (2110717092441).

Almost surely, 2^{4221434184881} is an apocalyptic number.

It is an amenable number.

4221434184881 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221434184881 is an equidigital number, since it uses as much as digits as its factorization.

4221434184881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1572864, while the sum is 50.

The spelling of 4221434184881 in words is "four trillion, two hundred twenty-one billion, four hundred thirty-four million, one hundred eighty-four thousand, eight hundred eighty-one".