2115611011 has 2 divisors, whose sum is σ = 2115611012. Its totient is φ = 2115611010.

The previous prime is 2115610999. The next prime is 2115611023. The reversal of 2115611011 is 1101165112.

It is a balanced prime because it is at equal distance from previous prime (2115610999) and next prime (2115611023).

It is a cyclic number.

It is not a de Polignac number, because 2115611011 - 2¹⁹ = 2115086723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2115611011.

It is not a weakly prime, because it can be changed into another prime (2115611041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057805505 + 1057805506.

It is an arithmetic number, because the mean of its divisors is an integer number (1057805506).

Almost surely, 2^2115611011 is an apocalyptic number.

2115611011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115611011 is an equidigital number, since it uses as much as digits as its factorization.

2115611011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 19.

The square root of 2115611011 is about 45995.7716643606. The cubic root of 2115611011 is about 1283.7445304169.

Adding to 2115611011 its reverse (1101165112), we get a palindrome (3216776123).

The spelling of 2115611011 in words is "two billion, one hundred fifteen million, six hundred eleven thousand, eleven".