212021201212 has 48 divisors (see below), whose sum is σ = 376511335200. Its totient is φ = 104459846400.

The previous prime is 212021201201. The next prime is 212021201213. The reversal of 212021201212 is 212102120212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021201213) 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, 83176914 + ... + 83179462.

It is an arithmetic number, because the mean of its divisors is an integer number (7843986150).

Almost surely, 2^212021201212 is an apocalyptic number.

It is an amenable number.

212021201212 is a deficient number, since it is larger than the sum of its proper divisors (164490133988).

212021201212 is a wasteful number, since it uses less digits than its factorization.

212021201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742 (or 3740 counting only the distinct ones).

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

Adding to 212021201212 its reverse (212102120212), we get a palindrome (424123321424).

The spelling of 212021201212 in words is "two hundred twelve billion, twenty-one million, two hundred one thousand, two hundred twelve".