2123040211 has 4 divisors (see below), whose sum is σ = 2124068400. Its totient is φ = 2122012024.

The previous prime is 2123040191. The next prime is 2123040251. The reversal of 2123040211 is 1120403212.

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 2123040211 - 2²¹ = 2120943059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123040251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510991 + ... + 515128.

It is an arithmetic number, because the mean of its divisors is an integer number (531017100).

Almost surely, 2^2123040211 is an apocalyptic number.

2123040211 is a deficient number, since it is larger than the sum of its proper divisors (1028189).

2123040211 is a wasteful number, since it uses less digits than its factorization.

2123040211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028188.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2123040211 is about 46076.4604868907. The cubic root of 2123040211 is about 1285.2454447956.

Adding to 2123040211 its reverse (1120403212), we get a palindrome (3243443423).

The spelling of 2123040211 in words is "two billion, one hundred twenty-three million, forty thousand, two hundred eleven".