212012212120 has 32 divisors (see below), whose sum is σ = 502134188400. Its totient is φ = 80341469568.

The previous prime is 212012212099. The next prime is 212012212129. The reversal of 212012212120 is 21212210212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212012212094 and 212012212103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012212129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139480959 + ... + 139482478.

Almost surely, 2^212012212120 is an apocalyptic number.

212012212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012212120 is an abundant number, since it is smaller than the sum of its proper divisors (290121976280).

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

212012212120 is a wasteful number, since it uses less digits than its factorization.

212012212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278963467 (or 278963463 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212012212120 its reverse (21212210212), we get a palindrome (233224422332).

The spelling of 212012212120 in words is "two hundred twelve billion, twelve million, two hundred twelve thousand, one hundred twenty".