211835122104457 has 2 divisors, whose sum is σ = 211835122104458. Its totient is φ = 211835122104456.

The previous prime is 211835122104391. The next prime is 211835122104493. The reversal of 211835122104457 is 754401221538112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208639998029376 + 3195124075081 = 14444376^2 + 1787491^2 .

It is a cyclic number.

It is not a de Polignac number, because 211835122104457 - 2⁷ = 211835122104329 is a prime.

It is not a weakly prime, because it can be changed into another prime (211835122104497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105917561052228 + 105917561052229.

It is an arithmetic number, because the mean of its divisors is an integer number (105917561052229).

Almost surely, 2^{211835122104457} is an apocalyptic number.

It is an amenable number.

211835122104457 is a deficient number, since it is larger than the sum of its proper divisors (1).

211835122104457 is an equidigital number, since it uses as much as digits as its factorization.

211835122104457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 211835122104457 in words is "two hundred eleven trillion, eight hundred thirty-five billion, one hundred twenty-two million, one hundred four thousand, four hundred fifty-seven".