211121121201061 has 2 divisors, whose sum is σ = 211121121201062. Its totient is φ = 211121121201060.

The previous prime is 211121121201013. The next prime is 211121121201071. The reversal of 211121121201061 is 160102121121112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154384824678561 + 56736296522500 = 12425169^2 + 7532350^2 .

It is a cyclic number.

It is not a de Polignac number, because 211121121201061 - 2¹¹ = 211121121199013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211121121201071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560560600530 + 105560560600531.

It is an arithmetic number, because the mean of its divisors is an integer number (105560560600531).

Almost surely, 2^{211121121201061} is an apocalyptic number.

It is an amenable number.

211121121201061 is a deficient number, since it is larger than the sum of its proper divisors (1).

211121121201061 is an equidigital number, since it uses as much as digits as its factorization.

211121121201061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 22.

Adding to 211121121201061 its reverse (160102121121112), we get a palindrome (371223242322173).

The spelling of 211121121201061 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred one thousand, sixty-one".