35222822221 has 2 divisors, whose sum is σ = 35222822222. Its totient is φ = 35222822220.

The previous prime is 35222822213. The next prime is 35222822237. The reversal of 35222822221 is 12222822253.

35222822221 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., 25236817321 + 9986004900 = 158861^2 + 99930^2 .

It is a cyclic number.

It is not a de Polignac number, because 35222822221 - 2³ = 35222822213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35222822251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17611411110 + 17611411111.

It is an arithmetic number, because the mean of its divisors is an integer number (17611411111).

Almost surely, 2^35222822221 is an apocalyptic number.

It is an amenable number.

35222822221 is a deficient number, since it is larger than the sum of its proper divisors (1).

35222822221 is an equidigital number, since it uses as much as digits as its factorization.

35222822221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 31.

The spelling of 35222822221 in words is "thirty-five billion, two hundred twenty-two million, eight hundred twenty-two thousand, two hundred twenty-one".