2123124213 has 16 divisors (see below), whose sum is σ = 3235882496. Its totient is φ = 1212971760.

The previous prime is 2123124173. The next prime is 2123124217. The reversal of 2123124213 is 3124213212.

It is not a de Polignac number, because 2123124213 - 2⁶ = 2123124149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 2123124213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123124217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189498 + ... + 200388.

It is an arithmetic number, because the mean of its divisors is an integer number (202242656).

Almost surely, 2^2123124213 is an apocalyptic number.

It is an amenable number.

2123124213 is a deficient number, since it is larger than the sum of its proper divisors (1112758283).

2123124213 is a wasteful number, since it uses less digits than its factorization.

2123124213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20184.

The product of its digits is 576, while the sum is 21.

The square root of 2123124213 is about 46077.3720279271. The cubic root of 2123124213 is about 1285.2623956072.

Adding to 2123124213 its reverse (3124213212), we get a palindrome (5247337425).

The spelling of 2123124213 in words is "two billion, one hundred twenty-three million, one hundred twenty-four thousand, two hundred thirteen".