211144204244 has 12 divisors (see below), whose sum is σ = 369507942804. Its totient is φ = 105570506304.

The previous prime is 211144204223. The next prime is 211144204247. The reversal of 211144204244 is 442402441112.

It can be written as a sum of positive squares in 2 ways, for example, as 60609516100 + 150534688144 = 246190^2 + 387988^2 .

It is a super-2 number, since 2×211144204244² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211144204247) 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, 71369 + ... + 653744.

It is an arithmetic number, because the mean of its divisors is an integer number (30792328567).

Almost surely, 2^211144204244 is an apocalyptic number.

It is an amenable number.

211144204244 is a deficient number, since it is larger than the sum of its proper divisors (158363738560).

211144204244 is a wasteful number, since it uses less digits than its factorization.

211144204244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797914 (or 797912 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 211144204244 its reverse (442402441112), we get a palindrome (653546645356).

The spelling of 211144204244 in words is "two hundred eleven billion, one hundred forty-four million, two hundred four thousand, two hundred forty-four".