2231302221 has 40 divisors (see below), whose sum is σ = 3621868800. Its totient is φ = 1363754880.

The previous prime is 2231302217. The next prime is 2231302231. The reversal of 2231302221 is 1222031322.

It is not a de Polignac number, because 2231302221 - 2² = 2231302217 is a prime.

It is a super-3 number, since 3×2231302221³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2231302194 and 2231302203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231302231) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24325 + ... + 71093.

It is an arithmetic number, because the mean of its divisors is an integer number (90546720).

Almost surely, 2^2231302221 is an apocalyptic number.

It is an amenable number.

2231302221 is a deficient number, since it is larger than the sum of its proper divisors (1390566579).

2231302221 is a wasteful number, since it uses less digits than its factorization.

2231302221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46831 (or 46822 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2231302221 is about 47236.6618316748. The cubic root of 2231302221 is about 1306.7308147897.

Adding to 2231302221 its reverse (1222031322), we get a palindrome (3453333543).

The spelling of 2231302221 in words is "two billion, two hundred thirty-one million, three hundred two thousand, two hundred twenty-one".