2122312120205 has 4 divisors (see below), whose sum is σ = 2546774544252. Its totient is φ = 1697849696160.

The previous prime is 2122312120199. The next prime is 2122312120237. The reversal of 2122312120205 is 5020212132212.

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 337493607364 + 1784818512841 = 580942^2 + 1335971^2 .

It is not a de Polignac number, because 2122312120205 - 2¹⁰ = 2122312119181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212231212016 + ... + 212231212025.

It is an arithmetic number, because the mean of its divisors is an integer number (636693636063).

Almost surely, 2^{2122312120205} is an apocalyptic number.

It is an amenable number.

2122312120205 is a deficient number, since it is larger than the sum of its proper divisors (424462424047).

2122312120205 is an equidigital number, since it uses as much as digits as its factorization.

2122312120205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424462424046.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 2122312120205 its reverse (5020212132212), we get a palindrome (7142524252417).

The spelling of 2122312120205 in words is "two trillion, one hundred twenty-two billion, three hundred twelve million, one hundred twenty thousand, two hundred five".