1213123023106 has 8 divisors (see below), whose sum is σ = 1819946418300. Its totient is φ = 606474217008.

The previous prime is 1213123023043. The next prime is 1213123023139. The reversal of 1213123023106 is 6013203213121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1212441029881 + 681993225 = 1101109^2 + 26115^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43629901 + ... + 43657696.

Almost surely, 2^{1213123023106} is an apocalyptic number.

1213123023106 is a deficient number, since it is larger than the sum of its proper divisors (606823395194).

1213123023106 is an equidigital number, since it uses as much as digits as its factorization.

1213123023106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87294548.

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

Adding to 1213123023106 its reverse (6013203213121), we get a palindrome (7226326236227).

The spelling of 1213123023106 in words is "one trillion, two hundred thirteen billion, one hundred twenty-three million, twenty-three thousand, one hundred six".