1313321222002 has 4 divisors (see below), whose sum is σ = 1969981833006. Its totient is φ = 656660611000.

The previous prime is 1313321221991. The next prime is 1313321222009. The reversal of 1313321222002 is 2002221233131.

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., 1137147109641 + 176174112361 = 1066371^2 + 419731^2 .

It is not an unprimeable number, because it can be changed into a prime (1313321222009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328330305499 + ... + 328330305502.

Almost surely, 2^{1313321222002} is an apocalyptic number.

1313321222002 is a deficient number, since it is larger than the sum of its proper divisors (656660611004).

1313321222002 is an equidigital number, since it uses as much as digits as its factorization.

1313321222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656660611003.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1313321222002 its reverse (2002221233131), we get a palindrome (3315542455133).

The spelling of 1313321222002 in words is "one trillion, three hundred thirteen billion, three hundred twenty-one million, two hundred twenty-two thousand, two".