98126221 has 2 divisors, whose sum is σ = 98126222. Its totient is φ = 98126220.

The previous prime is 98126219. The next prime is 98126233. The reversal of 98126221 is 12262189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49196196 + 48930025 = 7014^2 + 6995^2 .

It is a cyclic number.

It is not a de Polignac number, because 98126221 - 2¹ = 98126219 is a prime.

Together with 98126219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98126251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49063110 + 49063111.

It is an arithmetic number, because the mean of its divisors is an integer number (49063111).

Almost surely, 2^98126221 is an apocalyptic number.

It is an amenable number.

98126221 is a deficient number, since it is larger than the sum of its proper divisors (1).

98126221 is an equidigital number, since it uses as much as digits as its factorization.

98126221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 98126221 is about 9905.8680084079. The cubic root of 98126221 is about 461.2414809814.

The spelling of 98126221 in words is "ninety-eight million, one hundred twenty-six thousand, two hundred twenty-one".