22143201444421 has 2 divisors, whose sum is σ = 22143201444422. Its totient is φ = 22143201444420.

The previous prime is 22143201444409. The next prime is 22143201444571. The reversal of 22143201444421 is 12444410234122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13517755222500 + 8625446221921 = 3676650^2 + 2936911^2 .

It is a cyclic number.

It is not a de Polignac number, because 22143201444421 - 2¹³ = 22143201436229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22143201442421) 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, 11071600722210 + 11071600722211.

It is an arithmetic number, because the mean of its divisors is an integer number (11071600722211).

Almost surely, 2^{22143201444421} is an apocalyptic number.

It is an amenable number.

22143201444421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22143201444421 is an equidigital number, since it uses as much as digits as its factorization.

22143201444421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49152, while the sum is 34.

Adding to 22143201444421 its reverse (12444410234122), we get a palindrome (34587611678543).

The spelling of 22143201444421 in words is "twenty-two trillion, one hundred forty-three billion, two hundred one million, four hundred forty-four thousand, four hundred twenty-one".