211001233321061 has 2 divisors, whose sum is σ = 211001233321062. Its totient is φ = 211001233321060.

The previous prime is 211001233321027. The next prime is 211001233321063. The reversal of 211001233321061 is 160123332100112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205703548532161 + 5297684788900 = 14342369^2 + 2301670^2 .

It is a cyclic number.

It is not a de Polignac number, because 211001233321061 - 2⁴⁶ = 140632489143397 is a prime.

Together with 211001233321063, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211001233321061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211001233321063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105500616660530 + 105500616660531.

It is an arithmetic number, because the mean of its divisors is an integer number (105500616660531).

Almost surely, 2^{211001233321061} is an apocalyptic number.

It is an amenable number.

211001233321061 is a deficient number, since it is larger than the sum of its proper divisors (1).

211001233321061 is an equidigital number, since it uses as much as digits as its factorization.

211001233321061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 211001233321061 its reverse (160123332100112), we get a palindrome (371124565421173).

The spelling of 211001233321061 in words is "two hundred eleven trillion, one billion, two hundred thirty-three million, three hundred twenty-one thousand, sixty-one".