2120011 has 4 divisors (see below), whose sum is σ = 2136832. Its totient is φ = 2103192.

The previous prime is 2120009. The next prime is 2120017. The reversal of 2120011 is 1100212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2120011 - 2¹ = 2120009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2119976 and 2120003.

It is not an unprimeable number, because it can be changed into a prime (2120017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8220 + ... + 8473.

It is an arithmetic number, because the mean of its divisors is an integer number (534208).

2^2120011 is an apocalyptic number.

2120011 is a deficient number, since it is larger than the sum of its proper divisors (16821).

2120011 is a wasteful number, since it uses less digits than its factorization.

2120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16820.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 2120011 is about 1456.0257552667. The cubic root of 2120011 is about 128.4633879556.

Adding to 2120011 its reverse (1100212), we get a palindrome (3220223).

The spelling of 2120011 in words is "two million, one hundred twenty thousand, eleven".