212120112132 has 72 divisors (see below), whose sum is σ = 564585781760. Its totient is φ = 66964812480.

The previous prime is 212120112121. The next prime is 212120112137. The reversal of 212120112132 is 231211021212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (212120112137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2273718 + ... + 2365170.

Almost surely, 2^212120112132 is an apocalyptic number.

It is an amenable number.

212120112132 is an abundant number, since it is smaller than the sum of its proper divisors (352465669628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212120112132 is a wasteful number, since it uses less digits than its factorization.

212120112132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94873 (or 94868 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 212120112132 its reverse (231211021212), we get a palindrome (443331133344).

The spelling of 212120112132 in words is "two hundred twelve billion, one hundred twenty million, one hundred twelve thousand, one hundred thirty-two".