211121201201212 has 6 divisors (see below), whose sum is σ = 369462102102128. Its totient is φ = 105560600600604.

The previous prime is 211121201201123. The next prime is 211121201201213. The reversal of 211121201201212 is 212102102121112.

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 211121201201212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121201201213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26390150150148 + ... + 26390150150155.

Almost surely, 2^{211121201201212} is an apocalyptic number.

It is an amenable number.

211121201201212 is a deficient number, since it is larger than the sum of its proper divisors (158340900900916).

211121201201212 is a wasteful number, since it uses less digits than its factorization.

211121201201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52780300300307 (or 52780300300305 counting only the distinct ones).

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

Adding to 211121201201212 its reverse (212102102121112), we get a palindrome (423223303322324).

The spelling of 211121201201212 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred one million, two hundred one thousand, two hundred twelve".