34505547221 has 2 divisors, whose sum is σ = 34505547222. Its totient is φ = 34505547220.

The previous prime is 34505547191. The next prime is 34505547257. The reversal of 34505547221 is 12274550543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24927988996 + 9577558225 = 157886^2 + 97865^2 .

It is an emirp because it is prime and its reverse (12274550543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34505547221 - 2²² = 34501352917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34505547281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17252773610 + 17252773611.

It is an arithmetic number, because the mean of its divisors is an integer number (17252773611).

Almost surely, 2^34505547221 is an apocalyptic number.

It is an amenable number.

34505547221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34505547221 is an equidigital number, since it uses as much as digits as its factorization.

34505547221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168000, while the sum is 38.

The spelling of 34505547221 in words is "thirty-four billion, five hundred five million, five hundred forty-seven thousand, two hundred twenty-one".