212112120212 has 6 divisors (see below), whose sum is σ = 371196210378. Its totient is φ = 106056060104.

The previous prime is 212112120211. The next prime is 212112120263. The reversal of 212112120212 is 212021211212.

It can be written as a sum of positive squares in only one way, i.e., 152089080196 + 60023040016 = 389986^2 + 244996^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112120211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26514015023 + ... + 26514015030.

It is an arithmetic number, because the mean of its divisors is an integer number (61866035063).

Almost surely, 2^212112120212 is an apocalyptic number.

It is an amenable number.

212112120212 is a deficient number, since it is larger than the sum of its proper divisors (159084090166).

212112120212 is a wasteful number, since it uses less digits than its factorization.

212112120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53028030057 (or 53028030055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212112120212 its reverse (212021211212), we get a palindrome (424133331424).

The spelling of 212112120212 in words is "two hundred twelve billion, one hundred twelve million, one hundred twenty thousand, two hundred twelve".