2221331144 has 16 divisors (see below), whose sum is σ = 4183187100. Its totient is φ = 1105814592.

The previous prime is 2221331143. The next prime is 2221331159. The reversal of 2221331144 is 4411331222.

It can be written as a sum of positive squares in 2 ways, for example, as 2213702500 + 7628644 = 47050^2 + 2762^2 .

It is not an unprimeable number, because it can be changed into a prime (2221331143) 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 3 ways as a sum of consecutive naturals, for example, 604427 + ... + 608090.

Almost surely, 2^2221331144 is an apocalyptic number.

It is an amenable number.

2221331144 is a deficient number, since it is larger than the sum of its proper divisors (1961855956).

2221331144 is a wasteful number, since it uses less digits than its factorization.

2221331144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212752 (or 1212748 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 2221331144 is about 47130.9998196516. Note that the first 3 decimals coincide. The cubic root of 2221331144 is about 1304.7814344059.

Adding to 2221331144 its reverse (4411331222), we get a palindrome (6632662366).

The spelling of 2221331144 in words is "two billion, two hundred twenty-one million, three hundred thirty-one thousand, one hundred forty-four".