1212313113403 has 24 divisors (see below), whose sum is σ = 1484910543120. Its totient is φ = 984139269120.

The previous prime is 1212313113383. The next prime is 1212313113461. The reversal of 1212313113403 is 3043113132121.

It is a de Polignac number, because none of the positive numbers 2^k-1212313113403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212313113463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2935375 + ... + 3322807.

It is an arithmetic number, because the mean of its divisors is an integer number (61871272630).

Almost surely, 2^{1212313113403} is an apocalyptic number.

1212313113403 is a deficient number, since it is larger than the sum of its proper divisors (272597429717).

1212313113403 is a wasteful number, since it uses less digits than its factorization.

1212313113403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390827 (or 390820 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 1212313113403 its reverse (3043113132121), we get a palindrome (4255426245524).

The spelling of 1212313113403 in words is "one trillion, two hundred twelve billion, three hundred thirteen million, one hundred thirteen thousand, four hundred three".