2221322131 has 8 divisors (see below), whose sum is σ = 2592668160. Its totient is φ = 1863479688.

The previous prime is 2221322071. The next prime is 2221322203. The reversal of 2221322131 is 1312231222.

2221322131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2221322131 - 2⁷ = 2221322003 is a prime.

It is a super-2 number, since 2×2221322131² = 9868544019340762322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221322099 and 2221322108.

It is not an unprimeable number, because it can be changed into a prime (2221362131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3375541 + ... + 3376198.

It is an arithmetic number, because the mean of its divisors is an integer number (324083520).

Almost surely, 2^2221322131 is an apocalyptic number.

2221322131 is a deficient number, since it is larger than the sum of its proper divisors (371346029).

2221322131 is an equidigital number, since it uses as much as digits as its factorization.

2221322131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6751793.

The product of its digits is 288, while the sum is 19.

The square root of 2221322131 is about 47130.9042030810. The cubic root of 2221322131 is about 1304.7796696966.

Adding to 2221322131 its reverse (1312231222), we get a palindrome (3533553353).

Subtracting from 2221322131 its reverse (1312231222), we obtain a palindrome (909090909).

It can be divided in two parts, 22213 and 22131, that added together give a palindrome (44344).

The spelling of 2221322131 in words is "two billion, two hundred twenty-one million, three hundred twenty-two thousand, one hundred thirty-one".