1212123320313 has 64 divisors (see below), whose sum is σ = 1752733347840. Its totient is φ = 742686907392.

The previous prime is 1212123320281. The next prime is 1212123320329. The reversal of 1212123320313 is 3130233212121.

It is not a de Polignac number, because 1212123320313 - 2⁵ = 1212123320281 is a prime.

It is a super-2 number, since 2×1212123320313² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212123320383) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 160819281 + ... + 160826817.

It is an arithmetic number, because the mean of its divisors is an integer number (27386458560).

Almost surely, 2^{1212123320313} is an apocalyptic number.

It is an amenable number.

1212123320313 is a deficient number, since it is larger than the sum of its proper divisors (540610027527).

1212123320313 is a wasteful number, since it uses less digits than its factorization.

1212123320313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8126.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1212123320313 its reverse (3130233212121), we get a palindrome (4342356532434).

The spelling of 1212123320313 in words is "one trillion, two hundred twelve billion, one hundred twenty-three million, three hundred twenty thousand, three hundred thirteen".