212012121021212 has 12 divisors (see below), whose sum is σ = 371021789580960. Its totient is φ = 106005895426656.

The previous prime is 212012121021167. The next prime is 212012121021271. The reversal of 212012121021212 is 212120121210212.

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 3 ways as a sum of consecutive naturals, for example, 38358548 + ... + 43536219.

It is an arithmetic number, because the mean of its divisors is an integer number (30918482465080).

Almost surely, 2^{212012121021212} is an apocalyptic number.

It is an amenable number.

212012121021212 is a deficient number, since it is larger than the sum of its proper divisors (159009668559748).

212012121021212 is a wasteful number, since it uses less digits than its factorization.

212012121021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82541980 (or 82541978 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212012121021212 its reverse (212120121210212), we get a palindrome (424132242231424).

The spelling of 212012121021212 in words is "two hundred twelve trillion, twelve billion, one hundred twenty-one million, twenty-one thousand, two hundred twelve".