211031321130061 has 2 divisors, whose sum is σ = 211031321130062. Its totient is φ = 211031321130060.

The previous prime is 211031321129957. The next prime is 211031321130101. The reversal of 211031321130061 is 160031123130112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120683824813161 + 90347496316900 = 10985619^2 + 9505130^2 .

It is a cyclic number.

It is not a de Polignac number, because 211031321130061 - 2¹³ = 211031321121869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211031321131061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105515660565030 + 105515660565031.

It is an arithmetic number, because the mean of its divisors is an integer number (105515660565031).

Almost surely, 2^{211031321130061} is an apocalyptic number.

It is an amenable number.

211031321130061 is a deficient number, since it is larger than the sum of its proper divisors (1).

211031321130061 is an equidigital number, since it uses as much as digits as its factorization.

211031321130061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 211031321130061 its reverse (160031123130112), we get a palindrome (371062444260173).

The spelling of 211031321130061 in words is "two hundred eleven trillion, thirty-one billion, three hundred twenty-one million, one hundred thirty thousand, sixty-one".