211020241 has 2 divisors, whose sum is σ = 211020242. Its totient is φ = 211020240.

The previous prime is 211020233. The next prime is 211020247. The reversal of 211020241 is 142020112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202777600 + 8242641 = 14240^2 + 2871^2 .

It is a cyclic number.

It is not a de Polignac number, because 211020241 - 2³ = 211020233 is a prime.

It is a super-2 number, since 2×211020241² = 89059084223396162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211020247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510120 + 105510121.

It is an arithmetic number, because the mean of its divisors is an integer number (105510121).

Almost surely, 2^211020241 is an apocalyptic number.

It is an amenable number.

211020241 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020241 is an equidigital number, since it uses as much as digits as its factorization.

211020241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 211020241 is about 14526.5357535787. The cubic root of 211020241 is about 595.3532172916.

Adding to 211020241 its reverse (142020112), we get a palindrome (353040353).

The spelling of 211020241 in words is "two hundred eleven million, twenty thousand, two hundred forty-one".