2231221120 has 32 divisors (see below), whose sum is σ = 5334014520. Its totient is φ = 892488192.

The previous prime is 2231221081. The next prime is 2231221141. The reversal of 2231221120 is 211221322.

It is a happy number.

2231221120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×2231221120³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 2231221094 and 2231221103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1742502 + ... + 1743781.

Almost surely, 2^2231221120 is an apocalyptic number.

2231221120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231221120 is an abundant number, since it is smaller than the sum of its proper divisors (3102793400).

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

2231221120 is an equidigital number, since it uses as much as digits as its factorization.

2231221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486302 (or 3486290 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2231221120 is about 47235.8033699015. The cubic root of 2231221120 is about 1306.7149827106.

Adding to 2231221120 its reverse (211221322), we get a palindrome (2442442442).

The spelling of 2231221120 in words is "two billion, two hundred thirty-one million, two hundred twenty-one thousand, one hundred twenty".