211123332 has 72 divisors (see below), whose sum is σ = 626423616. Its totient is φ = 58688064.

The previous prime is 211123331. The next prime is 211123337. The reversal of 211123332 is 233321112.

211123332 is a `hidden beast` number, since 211 + 123 + 332 = 666.

211123332 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211123332² = 89146122629564448, which contains 22 as substring.

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

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

It is not an unprimeable number, because it can be changed into a prime (211123331) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1998 + ... + 20645.

It is an arithmetic number, because the mean of its divisors is an integer number (8700328).

Almost surely, 2^211123332 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 211123332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313211808).

211123332 is an abundant number, since it is smaller than the sum of its proper divisors (415300284).

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

211123332 is a wasteful number, since it uses less digits than its factorization.

211123332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22697 (or 22692 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 211123332 is about 14530.0836886785. The cubic root of 211123332 is about 595.4501520157.

Adding to 211123332 its reverse (233321112), we get a palindrome (444444444).

The spelling of 211123332 in words is "two hundred eleven million, one hundred twenty-three thousand, three hundred thirty-two".