2111300661005 has 8 divisors (see below), whose sum is σ = 2536071761400. Its totient is φ = 1687366550016.

The previous prime is 2111300660971. The next prime is 2111300661007. The reversal of 2111300661005 is 5001660031112.

It can be written as a sum of positive squares in 4 ways, for example, as 84851611849 + 2026449049156 = 291293^2 + 1423534^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2111300661005 - 2¹⁸ = 2111300398861 is a prime.

It is a super-2 number, since 2×2111300661005² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111300661007) 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, 209241800 + ... + 209251889.

It is an arithmetic number, because the mean of its divisors is an integer number (317008970175).

Almost surely, 2^{2111300661005} is an apocalyptic number.

It is an amenable number.

2111300661005 is a deficient number, since it is larger than the sum of its proper divisors (424771100395).

2111300661005 is a wasteful number, since it uses less digits than its factorization.

2111300661005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418494703.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 2111300661005 its reverse (5001660031112), we get a palindrome (7112960692117).

The spelling of 2111300661005 in words is "two trillion, one hundred eleven billion, three hundred million, six hundred sixty-one thousand, five".