212223312311312 has 20 divisors (see below), whose sum is σ = 411229281941676. Its totient is φ = 106099626648960.

The previous prime is 212223312311147. The next prime is 212223312311317. The reversal of 212223312311312 is 213113213322212.

It can be written as a sum of positive squares in 2 ways, for example, as 101912739993856 + 110310572317456 = 10095184^2 + 10502884^2 .

It is a super-2 number, since 2×212223312311312² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212223312311317) 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, 751698623 + ... + 751980894.

Almost surely, 2^{212223312311312} is an apocalyptic number.

It is an amenable number.

212223312311312 is a deficient number, since it is larger than the sum of its proper divisors (199005969630364).

212223312311312 is a wasteful number, since it uses less digits than its factorization.

212223312311312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503688346 (or 1503688340 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

Adding to 212223312311312 its reverse (213113213322212), we get a palindrome (425336525633524).

The spelling of 212223312311312 in words is "two hundred twelve trillion, two hundred twenty-three billion, three hundred twelve million, three hundred eleven thousand, three hundred twelve".