212212120302 has 144 divisors (see below), whose sum is σ = 581710514112. Its totient is φ = 55413590400.

The previous prime is 212212120291. The next prime is 212212120343. The reversal of 212212120302 is 203021212212.

212212120302 is a `hidden beast` number, since 21 + 221 + 2 + 120 + 302 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1066443 + ... + 1249689.

It is an arithmetic number, because the mean of its divisors is an integer number (4039656348).

Almost surely, 2^212212120302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212212120302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290855257056).

212212120302 is an abundant number, since it is smaller than the sum of its proper divisors (369498393810).

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

212212120302 is a wasteful number, since it uses less digits than its factorization.

212212120302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183383 (or 183373 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212212120302 its reverse (203021212212), we get a palindrome (415233332514).

The spelling of 212212120302 in words is "two hundred twelve billion, two hundred twelve million, one hundred twenty thousand, three hundred two".