2111030081 has 2 divisors, whose sum is σ = 2111030082. Its totient is φ = 2111030080.

The previous prime is 2111030059. The next prime is 2111030107. The reversal of 2111030081 is 1800301112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2103139600 + 7890481 = 45860^2 + 2809^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111030081 - 2²² = 2106835777 is a prime.

It is a super-2 number, since 2×2111030081² = 8912896005773733122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2111030381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055515040 + 1055515041.

It is an arithmetic number, because the mean of its divisors is an integer number (1055515041).

Almost surely, 2^2111030081 is an apocalyptic number.

It is an amenable number.

2111030081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111030081 is an equidigital number, since it uses as much as digits as its factorization.

2111030081 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 17.

The square root of 2111030081 is about 45945.9473838553. The cubic root of 2111030081 is about 1282.8172973485.

Adding to 2111030081 its reverse (1800301112), we get a palindrome (3911331193).

The spelling of 2111030081 in words is "two billion, one hundred eleven million, thirty thousand, eighty-one".