212243420412 has 36 divisors (see below), whose sum is σ = 537036012240. Its totient is φ = 70677677952.

The previous prime is 212243420407. The next prime is 212243420429. The reversal of 212243420412 is 214024342212.

It is a happy number.

212243420412 is a `hidden beast` number, since 2 + 1 + 2 + 243 + 4 + 2 + 0 + 412 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2885208 + ... + 2957855.

Almost surely, 2^212243420412 is an apocalyptic number.

It is an amenable number.

212243420412 is an abundant number, since it is smaller than the sum of its proper divisors (324792591828).

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

212243420412 is a wasteful number, since it uses less digits than its factorization.

212243420412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844082 (or 5844077 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 212243420412 its reverse (214024342212), we get a palindrome (426267762624).

The spelling of 212243420412 in words is "two hundred twelve billion, two hundred forty-three million, four hundred twenty thousand, four hundred twelve".