211123472 has 40 divisors (see below), whose sum is σ = 469958016. Its totient is φ = 90003456.

The previous prime is 211123427. The next prime is 211123481. The reversal of 211123472 is 274321112.

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 7 ways as a sum of consecutive naturals, for example, 16733 + ... + 26499.

Almost surely, 2^211123472 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 211123472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234979008).

211123472 is an abundant number, since it is smaller than the sum of its proper divisors (258834544).

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

211123472 is a wasteful number, since it uses less digits than its factorization.

211123472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9975 (or 9969 counting only the distinct ones).

The product of its digits is 672, while the sum is 23.

The square root of 211123472 is about 14530.0885062686. The cubic root of 211123472 is about 595.4502836338.

Adding to 211123472 its reverse (274321112), we get a palindrome (485444584).

The spelling of 211123472 in words is "two hundred eleven million, one hundred twenty-three thousand, four hundred seventy-two".