234434613221 has 2 divisors, whose sum is σ = 234434613222. Its totient is φ = 234434613220.

The previous prime is 234434613197. The next prime is 234434613227. The reversal of 234434613221 is 122316434432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169282050721 + 65152562500 = 411439^2 + 255250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234434613221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234434613227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117217306610 + 117217306611.

It is an arithmetic number, because the mean of its divisors is an integer number (117217306611).

Almost surely, 2^234434613221 is an apocalyptic number.

It is an amenable number.

234434613221 is a deficient number, since it is larger than the sum of its proper divisors (1).

234434613221 is an equidigital number, since it uses as much as digits as its factorization.

234434613221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 35.

The spelling of 234434613221 in words is "two hundred thirty-four billion, four hundred thirty-four million, six hundred thirteen thousand, two hundred twenty-one".