2211011211061 has 2 divisors, whose sum is σ = 2211011211062. Its totient is φ = 2211011211060.

The previous prime is 2211011211053. The next prime is 2211011211077. The reversal of 2211011211061 is 1601121101122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2128590542961 + 82420668100 = 1458969^2 + 287090^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211011211061 - 2³ = 2211011211053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211011218061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105505605530 + 1105505605531.

It is an arithmetic number, because the mean of its divisors is an integer number (1105505605531).

Almost surely, 2^{2211011211061} is an apocalyptic number.

It is an amenable number.

2211011211061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211011211061 is an equidigital number, since it uses as much as digits as its factorization.

2211011211061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 2211011211061 its reverse (1601121101122), we get a palindrome (3812132312183).

The spelling of 2211011211061 in words is "two trillion, two hundred eleven billion, eleven million, two hundred eleven thousand, sixty-one".