250116221 has 4 divisors (see below), whose sum is σ = 250384092. Its totient is φ = 249848352.

The previous prime is 250116203. The next prime is 250116241. The reversal of 250116221 is 122611052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96628900 + 153487321 = 9830^2 + 12389^2 .

It is a cyclic number.

It is not a de Polignac number, because 250116221 - 2⁶ = 250116157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 250116193 and 250116202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250116241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132530 + ... + 134403.

It is an arithmetic number, because the mean of its divisors is an integer number (62596023).

Almost surely, 2^250116221 is an apocalyptic number.

It is an amenable number.

250116221 is a deficient number, since it is larger than the sum of its proper divisors (267871).

250116221 is an equidigital number, since it uses as much as digits as its factorization.

250116221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267870.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 250116221 is about 15815.0631045216. The cubic root of 250116221 is about 630.0581293470.

Adding to 250116221 its reverse (122611052), we get a palindrome (372727273).

The spelling of 250116221 in words is "two hundred fifty million, one hundred sixteen thousand, two hundred twenty-one".