212120000010 has 48 divisors (see below), whose sum is σ = 553101453216. Its totient is φ = 56402312544.

The previous prime is 212119999999. The next prime is 212120000023. The reversal of 212120000010 is 10000021212.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 212119999947 and 212120000001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3364864 + ... + 3427323.

It is an arithmetic number, because the mean of its divisors is an integer number (11522946942).

Almost surely, 2^212120000010 is an apocalyptic number.

212120000010 is an abundant number, since it is smaller than the sum of its proper divisors (340981453206).

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

212120000010 is a wasteful number, since it uses less digits than its factorization.

212120000010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792547 (or 6792544 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 212120000010 its reverse (10000021212), we get a palindrome (222120021222).

The spelling of 212120000010 in words is "two hundred twelve billion, one hundred twenty million, ten", and thus it is an aban number.