1312220204404 has 12 divisors (see below), whose sum is σ = 2301345156544. Its totient is φ = 654693016824.

The previous prime is 1312220204401. The next prime is 1312220204411. The reversal of 1312220204404 is 4044020222131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312220204401) 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, 354269262 + ... + 354272965.

Almost surely, 2^{1312220204404} is an apocalyptic number.

It is an amenable number.

1312220204404 is a deficient number, since it is larger than the sum of its proper divisors (989124952140).

1312220204404 is a wasteful number, since it uses less digits than its factorization.

1312220204404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708542694 (or 708542692 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 1312220204404 its reverse (4044020222131), we get a palindrome (5356240426535).

The spelling of 1312220204404 in words is "one trillion, three hundred twelve billion, two hundred twenty million, two hundred four thousand, four hundred four".