212123011312 has 10 divisors (see below), whose sum is σ = 410988334448. Its totient is φ = 106061505648.

The previous prime is 212123011297. The next prime is 212123011327. The reversal of 212123011312 is 213110321212.

It is an interprime number because it is at equal distance from previous prime (212123011297) and next prime (212123011327).

It is a super-2 number, since 2×212123011312² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212123011312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6628844088 + ... + 6628844119.

Almost surely, 2^212123011312 is an apocalyptic number.

It is an amenable number.

212123011312 is a deficient number, since it is larger than the sum of its proper divisors (198865323136).

212123011312 is a wasteful number, since it uses less digits than its factorization.

212123011312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13257688215 (or 13257688209 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212123011312 its reverse (213110321212), we get a palindrome (425233332524).

The spelling of 212123011312 in words is "two hundred twelve billion, one hundred twenty-three million, eleven thousand, three hundred twelve".