211141404 has 120 divisors (see below), whose sum is σ = 571623360. Its totient is φ = 67931136.

The previous prime is 211141379. The next prime is 211141423. The reversal of 211141404 is 404141112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1868452 + ... + 1868564.

It is an arithmetic number, because the mean of its divisors is an integer number (4763528).

Almost surely, 2^211141404 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 211141404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285811680).

211141404 is an abundant number, since it is smaller than the sum of its proper divisors (360481956).

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

211141404 is a wasteful number, since it uses less digits than its factorization.

211141404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 211141404 is about 14530.7055575426. The cubic root of 211141404 is about 595.4671415608.

Adding to 211141404 its reverse (404141112), we get a palindrome (615282516).

The spelling of 211141404 in words is "two hundred eleven million, one hundred forty-one thousand, four hundred four".