1210323310123 has 4 divisors (see below), whose sum is σ = 1210633097320. Its totient is φ = 1210013522928.

The previous prime is 1210323310121. The next prime is 1210323310159. The reversal of 1210323310123 is 3210133230121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1210323310123 - 2¹ = 1210323310121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210323310094 and 1210323310103.

It is not an unprimeable number, because it can be changed into a prime (1210323310121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154887738 + ... + 154895551.

It is an arithmetic number, because the mean of its divisors is an integer number (302658274330).

Almost surely, 2^{1210323310123} is an apocalyptic number.

1210323310123 is a deficient number, since it is larger than the sum of its proper divisors (309787197).

1210323310123 is an equidigital number, since it uses as much as digits as its factorization.

1210323310123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309787196.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1210323310123 its reverse (3210133230121), we get a palindrome (4420456540244).

The spelling of 1210323310123 in words is "one trillion, two hundred ten billion, three hundred twenty-three million, three hundred ten thousand, one hundred twenty-three".