211422133212 has 12 divisors (see below), whose sum is σ = 493318310856. Its totient is φ = 70474044400.

The previous prime is 211422133171. The next prime is 211422133217. The reversal of 211422133212 is 212331224112.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211422133217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8809255539 + ... + 8809255562.

It is an arithmetic number, because the mean of its divisors is an integer number (41109859238).

Almost surely, 2^211422133212 is an apocalyptic number.

It is an amenable number.

211422133212 is an abundant number, since it is smaller than the sum of its proper divisors (281896177644).

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

211422133212 is a wasteful number, since it uses less digits than its factorization.

211422133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17618511108 (or 17618511106 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

Adding to 211422133212 its reverse (212331224112), we get a palindrome (423753357324).

The spelling of 211422133212 in words is "two hundred eleven billion, four hundred twenty-two million, one hundred thirty-three thousand, two hundred twelve".