211121444 has 12 divisors (see below), whose sum is σ = 370668144. Its totient is φ = 105216264.

The previous prime is 211121431. The next prime is 211121461. The reversal of 211121444 is 444121112.

211121444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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 3 ways as a sum of consecutive naturals, for example, 84734 + ... + 87189.

It is an arithmetic number, because the mean of its divisors is an integer number (30889012).

Almost surely, 2^211121444 is an apocalyptic number.

It is an amenable number.

211121444 is a deficient number, since it is larger than the sum of its proper divisors (159546700).

211121444 is a wasteful number, since it uses less digits than its factorization.

211121444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172234 (or 172232 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 211121444 is about 14530.0187198778. The cubic root of 211121444 is about 595.4483770449.

Adding to 211121444 its reverse (444121112), we get a palindrome (655242556).

The spelling of 211121444 in words is "two hundred eleven million, one hundred twenty-one thousand, four hundred forty-four".