2223121312 has 24 divisors (see below), whose sum is σ = 4390773156. Its totient is φ = 1108004352.

The previous prime is 2223121279. The next prime is 2223121333. The reversal of 2223121312 is 2131213222.

It can be written as a sum of positive squares in 2 ways, for example, as 1726901136 + 496220176 = 41556^2 + 22276^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2223121312.

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, 100963 + ... + 120994.

Almost surely, 2^2223121312 is an apocalyptic number.

It is an amenable number.

2223121312 is a deficient number, since it is larger than the sum of its proper divisors (2167651844).

2223121312 is a wasteful number, since it uses less digits than its factorization.

2223121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222280 (or 222272 counting only the distinct ones).

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

The square root of 2223121312 is about 47149.9874019071. The cubic root of 2223121312 is about 1305.1318475341.

Adding to 2223121312 its reverse (2131213222), we get a palindrome (4354334534).

It can be divided in two parts, 22231213 and 12, that added together give a square (22231225 = 4715²).

The spelling of 2223121312 in words is "two billion, two hundred twenty-three million, one hundred twenty-one thousand, three hundred twelve".