35500215221 has 2 divisors, whose sum is σ = 35500215222. Its totient is φ = 35500215220.

The previous prime is 35500215203. The next prime is 35500215229. The reversal of 35500215221 is 12251200553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35293258225 + 206956996 = 187865^2 + 14386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35500215221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35500215229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17750107610 + 17750107611.

It is an arithmetic number, because the mean of its divisors is an integer number (17750107611).

Almost surely, 2^35500215221 is an apocalyptic number.

It is an amenable number.

35500215221 is a deficient number, since it is larger than the sum of its proper divisors (1).

35500215221 is an equidigital number, since it uses as much as digits as its factorization.

35500215221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 35500215221 its reverse (12251200553), we get a palindrome (47751415774).

The spelling of 35500215221 in words is "thirty-five billion, five hundred million, two hundred fifteen thousand, two hundred twenty-one".