434411212421 has 2 divisors, whose sum is σ = 434411212422. Its totient is φ = 434411212420.

The previous prime is 434411212409. The next prime is 434411212439. The reversal of 434411212421 is 124212114434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269453389921 + 164957822500 = 519089^2 + 406150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434411212421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434411232421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217205606210 + 217205606211.

It is an arithmetic number, because the mean of its divisors is an integer number (217205606211).

Almost surely, 2^434411212421 is an apocalyptic number.

It is an amenable number.

434411212421 is a deficient number, since it is larger than the sum of its proper divisors (1).

434411212421 is an equidigital number, since it uses as much as digits as its factorization.

434411212421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 29.

Adding to 434411212421 its reverse (124212114434), we get a palindrome (558623326855).

The spelling of 434411212421 in words is "four hundred thirty-four billion, four hundred eleven million, two hundred twelve thousand, four hundred twenty-one".