2111012305 has 8 divisors (see below), whose sum is σ = 2595000744. Its totient is φ = 1647619200.

The previous prime is 2111012303. The next prime is 2111012311. The reversal of 2111012305 is 5032101112.

It can be written as a sum of positive squares in 4 ways, for example, as 74114881 + 2036897424 = 8609^2 + 45132^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2111012305 - 2¹ = 2111012303 is a prime.

It is a super-2 number, since 2×2111012305² = 8912745903722826050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111012303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5148606 + ... + 5149015.

It is an arithmetic number, because the mean of its divisors is an integer number (324375093).

Almost surely, 2^2111012305 is an apocalyptic number.

It is an amenable number.

2111012305 is a deficient number, since it is larger than the sum of its proper divisors (483988439).

2111012305 is a wasteful number, since it uses less digits than its factorization.

2111012305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10297667.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2111012305 is about 45945.7539387482. The cubic root of 2111012305 is about 1282.8136966697.

Adding to 2111012305 its reverse (5032101112), we get a palindrome (7143113417).

The spelling of 2111012305 in words is "two billion, one hundred eleven million, twelve thousand, three hundred five".