221358098 has 16 divisors (see below), whose sum is σ = 366301656. Its totient is φ = 99672960.

The previous prime is 221358097. The next prime is 221358101. The reversal of 221358098 is 890853122.

It can be written as a sum of positive squares in 4 ways, for example, as 108722329 + 112635769 = 10427^2 + 10613^2 .

It is not an unprimeable number, because it can be changed into a prime (221358097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102761 + ... + 104892.

Almost surely, 2^221358098 is an apocalyptic number.

221358098 is a deficient number, since it is larger than the sum of its proper divisors (144943558).

221358098 is a wasteful number, since it uses less digits than its factorization.

221358098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207709.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 221358098 is about 14878.1080114375. The cubic root of 221358098 is about 604.9207354662.

The spelling of 221358098 in words is "two hundred twenty-one million, three hundred fifty-eight thousand, ninety-eight".