211423340212 has 48 divisors (see below), whose sum is σ = 424724930560. Its totient is φ = 90208069632.

The previous prime is 211423340201. The next prime is 211423340239. The reversal of 211423340212 is 212043324112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9909268 + ... + 9930580.

Almost surely, 2^211423340212 is an apocalyptic number.

It is an amenable number.

211423340212 is an abundant number, since it is smaller than the sum of its proper divisors (213301590348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211423340212 is a wasteful number, since it uses less digits than its factorization.

211423340212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22880 (or 22878 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 211423340212 its reverse (212043324112), we get a palindrome (423466664324).

The spelling of 211423340212 in words is "two hundred eleven billion, four hundred twenty-three million, three hundred forty thousand, two hundred twelve".