211304421144 has 128 divisors (see below), whose sum is σ = 631672516800. Its totient is φ = 65204766720.

The previous prime is 211304421143. The next prime is 211304421151. The reversal of 211304421144 is 441124403112.

211304421144 is a `hidden beast` number, since 211 + 3 + 0 + 442 + 1 + 1 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211304421143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247687 + ... + 695670.

Almost surely, 2^211304421144 is an apocalyptic number.

211304421144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

211304421144 is an abundant number, since it is smaller than the sum of its proper divisors (420368095656).

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

211304421144 is a wasteful number, since it uses less digits than its factorization.

211304421144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943450 (or 943440 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 211304421144 its reverse (441124403112), we get a palindrome (652428824256).

The spelling of 211304421144 in words is "two hundred eleven billion, three hundred four million, four hundred twenty-one thousand, one hundred forty-four".