1330112221 has 4 divisors (see below), whose sum is σ = 1355208732. Its totient is φ = 1305015712.

The previous prime is 1330112171. The next prime is 1330112237. The reversal of 1330112221 is 1222110331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 338744025 + 991368196 = 18405^2 + 31486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330112221 - 2⁷ = 1330112093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1330112195 and 1330112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330112281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12548176 + ... + 12548281.

It is an arithmetic number, because the mean of its divisors is an integer number (338802183).

Almost surely, 2^1330112221 is an apocalyptic number.

It is an amenable number.

1330112221 is a deficient number, since it is larger than the sum of its proper divisors (25096511).

1330112221 is an equidigital number, since it uses as much as digits as its factorization.

1330112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25096510.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1330112221 is about 36470.7035989162. The cubic root of 1330112221 is about 1099.7553783866.

Adding to 1330112221 its reverse (1222110331), we get a palindrome (2552222552).

The spelling of 1330112221 in words is "one billion, three hundred thirty million, one hundred twelve thousand, two hundred twenty-one".