211544142012 has 108 divisors (see below), whose sum is σ = 623092566096. Its totient is φ = 60338960640.

The previous prime is 211544141999. The next prime is 211544142041. The reversal of 211544142012 is 210241445112.

211544142012 is a `hidden beast` number, since 2 + 1 + 15 + 441 + 4 + 201 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 944937 + ... + 1147167.

It is an arithmetic number, because the mean of its divisors is an integer number (5769375612).

Almost surely, 2^211544142012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211544142012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311546283048).

211544142012 is an abundant number, since it is smaller than the sum of its proper divisors (411548424084).

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

211544142012 is a wasteful number, since it uses less digits than its factorization.

211544142012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202848 (or 202836 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 211544142012 its reverse (210241445112), we get a palindrome (421785587124).

The spelling of 211544142012 in words is "two hundred eleven billion, five hundred forty-four million, one hundred forty-two thousand, twelve".