2122020011 has 4 divisors (see below), whose sum is σ = 2122136592. Its totient is φ = 2121903432.

The previous prime is 2122020001. The next prime is 2122020077. The reversal of 2122020011 is 1100202212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2122020011 - 2⁶ = 2122019947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122019974 and 2122020001.

It is not an unprimeable number, because it can be changed into a prime (2122020001) 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, 24431 + ... + 69576.

It is an arithmetic number, because the mean of its divisors is an integer number (530534148).

Almost surely, 2^2122020011 is an apocalyptic number.

2122020011 is a deficient number, since it is larger than the sum of its proper divisors (116581).

2122020011 is an equidigital number, since it uses as much as digits as its factorization.

2122020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116580.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2122020011 is about 46065.3884277556. The cubic root of 2122020011 is about 1285.0395423544.

Adding to 2122020011 its reverse (1100202212), we get a palindrome (3222222223).

The spelling of 2122020011 in words is "two billion, one hundred twenty-two million, twenty thousand, eleven".