211135422012 has 24 divisors (see below), whose sum is σ = 492664709376. Its totient is φ = 70376275248.

The previous prime is 211135421993. The next prime is 211135422037. The reversal of 211135422012 is 210224531112.

It is a happy number.

211135422012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 151743 + ... + 667305.

It is an arithmetic number, because the mean of its divisors is an integer number (20527696224).

Almost surely, 2^211135422012 is an apocalyptic number.

It is an amenable number.

211135422012 is an abundant number, since it is smaller than the sum of its proper divisors (281529287364).

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

211135422012 is a wasteful number, since it uses less digits than its factorization.

211135422012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549697 (or 549695 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 211135422012 its reverse (210224531112), we get a palindrome (421359953124).

The spelling of 211135422012 in words is "two hundred eleven billion, one hundred thirty-five million, four hundred twenty-two thousand, twelve".