2121122312 has 16 divisors (see below), whose sum is σ = 3981214800. Its totient is φ = 1059465040.

The previous prime is 2121122309. The next prime is 2121122359. The reversal of 2121122312 is 2132211212.

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, 128762 + ... + 144297.

It is an arithmetic number, because the mean of its divisors is an integer number (248825925).

Almost surely, 2^2121122312 is an apocalyptic number.

It is an amenable number.

2121122312 is a deficient number, since it is larger than the sum of its proper divisors (1860092488).

2121122312 is a wasteful number, since it uses less digits than its factorization.

2121122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274036 (or 274032 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 2121122312 is about 46055.6436498286. The cubic root of 2121122312 is about 1284.8583091561.

Adding to 2121122312 its reverse (2132211212), we get a palindrome (4253333524).

Subtracting 2121122312 from its reverse (2132211212), we obtain a square (11088900 = 3330²).

The spelling of 2121122312 in words is "two billion, one hundred twenty-one million, one hundred twenty-two thousand, three hundred twelve".