1313202122 has 4 divisors (see below), whose sum is σ = 1969803186. Its totient is φ = 656601060.

The previous prime is 1313202109. The next prime is 1313202127. The reversal of 1313202122 is 2212023131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2212023131 = 293 ⋅7549567.

It can be written as a sum of positive squares in only one way, i.e., 1298232961 + 14969161 = 36031^2 + 3869^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1313202122.

It is not an unprimeable number, because it can be changed into a prime (1313202127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328300529 + ... + 328300532.

Almost surely, 2^1313202122 is an apocalyptic number.

1313202122 is a deficient number, since it is larger than the sum of its proper divisors (656601064).

1313202122 is an equidigital number, since it uses as much as digits as its factorization.

1313202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656601063.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1313202122 is about 36238.1307740893. The cubic root of 1313202122 is about 1095.0749855170.

Adding to 1313202122 its reverse (2212023131), we get a palindrome (3525225253).

The spelling of 1313202122 in words is "one billion, three hundred thirteen million, two hundred two thousand, one hundred twenty-two".