2120011005 has 32 divisors (see below), whose sum is σ = 3878866944. Its totient is φ = 968579136.

The previous prime is 2120011001. The next prime is 2120011079. The reversal of 2120011005 is 5001100212.

It is not a de Polignac number, because 2120011005 - 2² = 2120011001 is a prime.

It is a super-2 number, since 2×2120011005² = 8988893322642220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120011001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211722 + ... + 221508.

It is an arithmetic number, because the mean of its divisors is an integer number (121214592).

Almost surely, 2^2120011005 is an apocalyptic number.

It is an amenable number.

2120011005 is a deficient number, since it is larger than the sum of its proper divisors (1758855939).

2120011005 is a wasteful number, since it uses less digits than its factorization.

2120011005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11865.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 2120011005 is about 46043.5772393936. The cubic root of 2120011005 is about 1284.6338805658.

Adding to 2120011005 its reverse (5001100212), we get a palindrome (7121111217).

The spelling of 2120011005 in words is "two billion, one hundred twenty million, eleven thousand, five".