212202011221212 has 24 divisors (see below), whose sum is σ = 501920738872336. Its totient is φ = 69765044784768.

The previous prime is 212202011221199. The next prime is 212202011221223. The reversal of 212202011221212 is 212122110202212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121119868543 + ... + 121119870294.

Almost surely, 2^{212202011221212} is an apocalyptic number.

It is an amenable number.

212202011221212 is an abundant number, since it is smaller than the sum of its proper divisors (289718727651124).

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

212202011221212 is a wasteful number, since it uses less digits than its factorization.

212202011221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242239738917 (or 242239738915 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212202011221212 its reverse (212122110202212), we get a palindrome (424324121423424).

The spelling of 212202011221212 in words is "two hundred twelve trillion, two hundred two billion, eleven million, two hundred twenty-one thousand, two hundred twelve".