2211000257 has 2 divisors, whose sum is σ = 2211000258. Its totient is φ = 2211000256.

The previous prime is 2211000173. The next prime is 2211000271. The reversal of 2211000257 is 7520001122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1854508096 + 356492161 = 43064^2 + 18881^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211000257 - 2¹⁸ = 2210738113 is a prime.

It is not a weakly prime, because it can be changed into another prime (2211000287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105500128 + 1105500129.

It is an arithmetic number, because the mean of its divisors is an integer number (1105500129).

Almost surely, 2^2211000257 is an apocalyptic number.

It is an amenable number.

2211000257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211000257 is an equidigital number, since it uses as much as digits as its factorization.

2211000257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 2211000257 is about 47021.2745148406. The cubic root of 2211000257 is about 1302.7555469870.

Adding to 2211000257 its reverse (7520001122), we get a palindrome (9731001379).

The spelling of 2211000257 in words is "two billion, two hundred eleven million, two hundred fifty-seven", and thus it is an aban number.