2011611101 has 2 divisors, whose sum is σ = 2011611102. Its totient is φ = 2011611100.

The previous prime is 2011611097. The next prime is 2011611109. The reversal of 2011611101 is 1011161102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1742979001 + 268632100 = 41749^2 + 16390^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011611101 - 2² = 2011611097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011611109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005805550 + 1005805551.

It is an arithmetic number, because the mean of its divisors is an integer number (1005805551).

Almost surely, 2^2011611101 is an apocalyptic number.

It is an amenable number.

2011611101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011611101 is an equidigital number, since it uses as much as digits as its factorization.

2011611101 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 14.

The square root of 2011611101 is about 44850.9877371725. The cubic root of 2011611101 is about 1262.3545251587.

Adding to 2011611101 its reverse (1011161102), we get a palindrome (3022772203).

The spelling of 2011611101 in words is "two billion, eleven million, six hundred eleven thousand, one hundred one".