434223012121421 has 2 divisors, whose sum is σ = 434223012121422. Its totient is φ = 434223012121420.

The previous prime is 434223012121373. The next prime is 434223012121429. The reversal of 434223012121421 is 124121210322434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324505997402500 + 109717014718921 = 18014050^2 + 10474589^2 .

It is a cyclic number.

It is not a de Polignac number, because 434223012121421 - 2³⁸ = 433948134214477 is a prime.

It is a super-3 number, since 3×434223012121421³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434223012121429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217111506060710 + 217111506060711.

It is an arithmetic number, because the mean of its divisors is an integer number (217111506060711).

Almost surely, 2^{434223012121421} is an apocalyptic number.

It is an amenable number.

434223012121421 is a deficient number, since it is larger than the sum of its proper divisors (1).

434223012121421 is an equidigital number, since it uses as much as digits as its factorization.

434223012121421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 434223012121421 its reverse (124121210322434), we get a palindrome (558344222443855).

The spelling of 434223012121421 in words is "four hundred thirty-four trillion, two hundred twenty-three billion, twelve million, one hundred twenty-one thousand, four hundred twenty-one".