211226441 has 2 divisors, whose sum is σ = 211226442. Its totient is φ = 211226440.

The previous prime is 211226437. The next prime is 211226447. The reversal of 211226441 is 144622112.

211226441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135606025 + 75620416 = 11645^2 + 8696^2 .

It is a cyclic number.

It is not a de Polignac number, because 211226441 - 2² = 211226437 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (211226447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105613220 + 105613221.

It is an arithmetic number, because the mean of its divisors is an integer number (105613221).

Almost surely, 2^211226441 is an apocalyptic number.

It is an amenable number.

211226441 is a deficient number, since it is larger than the sum of its proper divisors (1).

211226441 is an equidigital number, since it uses as much as digits as its factorization.

211226441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 23.

The square root of 211226441 is about 14533.6313769133. The cubic root of 211226441 is about 595.5470721064.

Adding to 211226441 its reverse (144622112), we get a palindrome (355848553).

The spelling of 211226441 in words is "two hundred eleven million, two hundred twenty-six thousand, four hundred forty-one".