2122140205 has 4 divisors (see below), whose sum is σ = 2546568252. Its totient is φ = 1697712160.

The previous prime is 2122140203. The next prime is 2122140211. The reversal of 2122140205 is 5020412212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1157292361 + 964847844 = 34019^2 + 31062^2 .

It is not a de Polignac number, because 2122140205 - 2¹ = 2122140203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122140203) 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 3 ways as a sum of consecutive naturals, for example, 212214016 + ... + 212214025.

It is an arithmetic number, because the mean of its divisors is an integer number (636642063).

Almost surely, 2^2122140205 is an apocalyptic number.

It is an amenable number.

2122140205 is a deficient number, since it is larger than the sum of its proper divisors (424428047).

2122140205 is an equidigital number, since it uses as much as digits as its factorization.

2122140205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424428046.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 2122140205 is about 46066.6930113287. The cubic root of 2122140205 is about 1285.0638040054.

Adding to 2122140205 its reverse (5020412212), we get a palindrome (7142552417).

The spelling of 2122140205 in words is "two billion, one hundred twenty-two million, one hundred forty thousand, two hundred five".