212212220212 has 12 divisors (see below), whose sum is σ = 371376242496. Its totient is φ = 106104722360.

The previous prime is 212212220197. The next prime is 212212220249. The reversal of 212212220212 is 212022212212.

It is a self number, because there is not a number n which added to its sum of digits gives 212212220212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46773 + ... + 653155.

It is an arithmetic number, because the mean of its divisors is an integer number (30948020208).

Almost surely, 2^212212220212 is an apocalyptic number.

It is an amenable number.

212212220212 is a deficient number, since it is larger than the sum of its proper divisors (159164022284).

212212220212 is a wasteful number, since it uses less digits than its factorization.

212212220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693878 (or 693876 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212212220212 its reverse (212022212212), we get a palindrome (424234432424).

The spelling of 212212220212 in words is "two hundred twelve billion, two hundred twelve million, two hundred twenty thousand, two hundred twelve".