4234135323221 has 2 divisors, whose sum is σ = 4234135323222. Its totient is φ = 4234135323220.

The previous prime is 4234135323211. The next prime is 4234135323277. The reversal of 4234135323221 is 1223235314324.

4234135323221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3475189442596 + 758945880625 = 1864186^2 + 871175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4234135323221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4234135323211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2117067661610 + 2117067661611.

It is an arithmetic number, because the mean of its divisors is an integer number (2117067661611).

Almost surely, 2^{4234135323221} is an apocalyptic number.

It is an amenable number.

4234135323221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4234135323221 is an equidigital number, since it uses as much as digits as its factorization.

4234135323221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 35.

The spelling of 4234135323221 in words is "four trillion, two hundred thirty-four billion, one hundred thirty-five million, three hundred twenty-three thousand, two hundred twenty-one".