34065641221 has 2 divisors, whose sum is σ = 34065641222. Its totient is φ = 34065641220.

The previous prime is 34065641213. The next prime is 34065641227. The reversal of 34065641221 is 12214656043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33328518721 + 737122500 = 182561^2 + 27150^2 .

It is a cyclic number.

It is not a de Polignac number, because 34065641221 - 2³ = 34065641213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34065641227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17032820610 + 17032820611.

It is an arithmetic number, because the mean of its divisors is an integer number (17032820611).

Almost surely, 2^34065641221 is an apocalyptic number.

It is an amenable number.

34065641221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34065641221 is an equidigital number, since it uses as much as digits as its factorization.

34065641221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 34065641221 in words is "thirty-four billion, sixty-five million, six hundred forty-one thousand, two hundred twenty-one".