211445345244 has 96 divisors (see below), whose sum is σ = 570457036800. Its totient is φ = 59706155520.

The previous prime is 211445345233. The next prime is 211445345261. The reversal of 211445345244 is 442543544112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19963102 + ... + 19973690.

It is an arithmetic number, because the mean of its divisors is an integer number (5942260800).

Almost surely, 2^211445345244 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 211445345244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285228518400).

211445345244 is an abundant number, since it is smaller than the sum of its proper divisors (359011691556).

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

211445345244 is a wasteful number, since it uses less digits than its factorization.

211445345244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13363 (or 13361 counting only the distinct ones).

The product of its digits is 307200, while the sum is 39.

Adding to 211445345244 its reverse (442543544112), we get a palindrome (653988889356).

The spelling of 211445345244 in words is "two hundred eleven billion, four hundred forty-five million, three hundred forty-five thousand, two hundred forty-four".