212120320112 has 20 divisors (see below), whose sum is σ = 411020995800. Its totient is φ = 106050385728.

The previous prime is 212120320103. The next prime is 212120320121. The reversal of 212120320112 is 211023021212.

It is an interprime number because it is at equal distance from previous prime (212120320103) and next prime (212120320121).

It is a congruent number.

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, 430238 + ... + 780605.

It is an arithmetic number, because the mean of its divisors is an integer number (20551049790).

Almost surely, 2^212120320112 is an apocalyptic number.

It is an amenable number.

212120320112 is a deficient number, since it is larger than the sum of its proper divisors (198900675688).

212120320112 is a wasteful number, since it uses less digits than its factorization.

212120320112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221800 (or 1221794 counting only the distinct ones).

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

Adding to 212120320112 its reverse (211023021212), we get a palindrome (423143341324).

The spelling of 212120320112 in words is "two hundred twelve billion, one hundred twenty million, three hundred twenty thousand, one hundred twelve".