212112121001212 has 48 divisors (see below), whose sum is σ = 381121033955200. Its totient is φ = 103237278484032.

The previous prime is 212112121001153. The next prime is 212112121001227. The reversal of 212112121001212 is 212100121211212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212112121001212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369182539 + ... + 369756637.

Almost surely, 2^{212112121001212} is an apocalyptic number.

It is an amenable number.

212112121001212 is a deficient number, since it is larger than the sum of its proper divisors (169008912953988).

212112121001212 is a wasteful number, since it uses less digits than its factorization.

212112121001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581450 (or 581448 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212112121001212 its reverse (212100121211212), we get a palindrome (424212242212424).

The spelling of 212112121001212 in words is "two hundred twelve trillion, one hundred twelve billion, one hundred twenty-one million, one thousand, two hundred twelve".