211144113444 has 96 divisors (see below), whose sum is σ = 566372136960. Its totient is φ = 60548342400.

The previous prime is 211144113421. The next prime is 211144113491. The reversal of 211144113444 is 444311441112.

It is a super-2 number, since 2×211144113444² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 2238582 + ... + 2330994.

It is an arithmetic number, because the mean of its divisors is an integer number (5899709760).

Almost surely, 2^211144113444 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 211144113444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283186068480).

211144113444 is an abundant number, since it is smaller than the sum of its proper divisors (355228023516).

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

211144113444 is a wasteful number, since it uses less digits than its factorization.

211144113444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93361 (or 93359 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

Adding to 211144113444 its reverse (444311441112), we get a palindrome (655455554556).

The spelling of 211144113444 in words is "two hundred eleven billion, one hundred forty-four million, one hundred thirteen thousand, four hundred forty-four".