211404012244 has 24 divisors (see below), whose sum is σ = 399110134248. Its totient is φ = 97607178240.

The previous prime is 211404012241. The next prime is 211404012251. The reversal of 211404012244 is 442210404112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27311528644 + 184092483600 = 165262^2 + 429060^2 .

It is a super-2 number, since 2×211404012244² (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 (211404012241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29325477 + ... + 29332684.

It is an arithmetic number, because the mean of its divisors is an integer number (16629588927).

Almost surely, 2^211404012244 is an apocalyptic number.

It is an amenable number.

211404012244 is a deficient number, since it is larger than the sum of its proper divisors (187706122004).

211404012244 is a wasteful number, since it uses less digits than its factorization.

211404012244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58658235 (or 58658233 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 211404012244 its reverse (442210404112), we get a palindrome (653614416356).

The spelling of 211404012244 in words is "two hundred eleven billion, four hundred four million, twelve thousand, two hundred forty-four".