2011011111061 has 2 divisors, whose sum is σ = 2011011111062. Its totient is φ = 2011011111060.

The previous prime is 2011011111019. The next prime is 2011011111079. The reversal of 2011011111061 is 1601111101102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1959468036100 + 51543074961 = 1399810^2 + 227031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011011111061 - 2¹¹ = 2011011109013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011011117061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005505555530 + 1005505555531.

It is an arithmetic number, because the mean of its divisors is an integer number (1005505555531).

Almost surely, 2^{2011011111061} is an apocalyptic number.

It is an amenable number.

2011011111061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011011111061 is an equidigital number, since it uses as much as digits as its factorization.

2011011111061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 2011011111061 its reverse (1601111101102), we get a palindrome (3612122212163).

The spelling of 2011011111061 in words is "two trillion, eleven billion, eleven million, one hundred eleven thousand, sixty-one".