212221120012 has 48 divisors (see below), whose sum is σ = 419566637952. Its totient is φ = 93085534080.

The previous prime is 212221120009. The next prime is 212221120019. The reversal of 212221120012 is 210021122212.

It is a happy number.

212221120012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212221120019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518673 + ... + 832744.

It is an arithmetic number, because the mean of its divisors is an integer number (8740971624).

Almost surely, 2^212221120012 is an apocalyptic number.

212221120012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212221120012 is a deficient number, since it is larger than the sum of its proper divisors (207345517940).

212221120012 is a wasteful number, since it uses less digits than its factorization.

212221120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351558 (or 1351556 counting only the distinct ones).

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

Adding to 212221120012 its reverse (210021122212), we get a palindrome (422242242224).

It can be divided in two parts, 212221 and 120012, that added together give a palindrome (332233).

The spelling of 212221120012 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred twenty thousand, twelve".