350888221 has 2 divisors, whose sum is σ = 350888222. Its totient is φ = 350888220.

The previous prime is 350888189. The next prime is 350888231. The reversal of 350888221 is 122888053.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266505625 + 84382596 = 16325^2 + 9186^2 .

It is a cyclic number.

It is not a de Polignac number, because 350888221 - 2⁵ = 350888189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (350888231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175444110 + 175444111.

It is an arithmetic number, because the mean of its divisors is an integer number (175444111).

Almost surely, 2^350888221 is an apocalyptic number.

It is an amenable number.

350888221 is a deficient number, since it is larger than the sum of its proper divisors (1).

350888221 is an equidigital number, since it uses as much as digits as its factorization.

350888221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 350888221 is about 18732.0105968366. The cubic root of 350888221 is about 705.3255180697.

The spelling of 350888221 in words is "three hundred fifty million, eight hundred eighty-eight thousand, two hundred twenty-one".