2231211132 has 72 divisors (see below), whose sum is σ = 5759601120. Its totient is φ = 728133120.

The previous prime is 2231211127. The next prime is 2231211233. The reversal of 2231211132 is 2311121322.

It is a super-3 number, since 3×2231211132³ (a number of 29 digits) contains 333 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 a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326632 + ... + 333392.

It is an arithmetic number, because the mean of its divisors is an integer number (79994460).

Almost surely, 2^2231211132 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 2231211132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2879800560).

2231211132 is an abundant number, since it is smaller than the sum of its proper divisors (3528389988).

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

2231211132 is a wasteful number, since it uses less digits than its factorization.

2231211132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6963 (or 6958 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 2231211132 is about 47235.6976448956. The cubic root of 2231211132 is about 1306.7130328831.

Adding to 2231211132 its reverse (2311121322), we get a palindrome (4542332454).

The spelling of 2231211132 in words is "two billion, two hundred thirty-one million, two hundred eleven thousand, one hundred thirty-two".