211144213012 has 6 divisors (see below), whose sum is σ = 369502372778. Its totient is φ = 105572106504.

The previous prime is 211144213009. The next prime is 211144213051. The reversal of 211144213012 is 210312441112.

It can be written as a sum of positive squares in only one way, i.e., 134435155716 + 76709057296 = 366654^2 + 276964^2 .

It is a super-2 number, since 2×211144213012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26393026623 + ... + 26393026630.

Almost surely, 2^211144213012 is an apocalyptic number.

It is an amenable number.

211144213012 is a deficient number, since it is larger than the sum of its proper divisors (158358159766).

211144213012 is a wasteful number, since it uses less digits than its factorization.

211144213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52786053257 (or 52786053255 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 211144213012 its reverse (210312441112), we get a palindrome (421456654124).

The spelling of 211144213012 in words is "two hundred eleven billion, one hundred forty-four million, two hundred thirteen thousand, twelve".