1331013122 has 4 divisors (see below), whose sum is σ = 1996519686. Its totient is φ = 665506560.

The previous prime is 1331013121. The next prime is 1331013133. The reversal of 1331013122 is 2213101331.

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

It can be written as a sum of positive squares in only one way, i.e., 1293912841 + 37100281 = 35971^2 + 6091^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1331013122.

It is not an unprimeable number, because it can be changed into a prime (1331013121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332753279 + ... + 332753282.

Almost surely, 2^1331013122 is an apocalyptic number.

1331013122 is a deficient number, since it is larger than the sum of its proper divisors (665506564).

1331013122 is an equidigital number, since it uses as much as digits as its factorization.

1331013122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665506563.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1331013122 is about 36483.0525312781. The cubic root of 1331013122 is about 1100.0036148642.

Adding to 1331013122 its reverse (2213101331), we get a palindrome (3544114453).

The spelling of 1331013122 in words is "one billion, three hundred thirty-one million, thirteen thousand, one hundred twenty-two".