2123122312 has 16 divisors (see below), whose sum is σ = 3995657100. Its totient is φ = 1057613760.

The previous prime is 2123122289. The next prime is 2123122319. The reversal of 2123122312 is 2132213212.

It can be written as a sum of positive squares in 2 ways, for example, as 1899739396 + 223382916 = 43586^2 + 14946^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2123122312.

It is not an unprimeable number, because it can be changed into a prime (2123122319) 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, 491139 + ... + 495442.

Almost surely, 2^2123122312 is an apocalyptic number.

It is an amenable number.

2123122312 is a deficient number, since it is larger than the sum of its proper divisors (1872534788).

2123122312 is a wasteful number, since it uses less digits than its factorization.

2123122312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986856 (or 986852 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 2123122312 is about 46077.3513995759. The cubic root of 2123122312 is about 1285.2620120083.

Adding to 2123122312 its reverse (2132213212), we get a palindrome (4255335524).

The spelling of 2123122312 in words is "two billion, one hundred twenty-three million, one hundred twenty-two thousand, three hundred twelve".