1311231012122 has 8 divisors (see below), whose sum is σ = 1966853556000. Its totient is φ = 655613160124.

The previous prime is 1311231012071. The next prime is 1311231012139. The reversal of 1311231012122 is 2212101321131.

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

It is a junction number, because it is equal to n+sod(n) for n = 1311231012094 and 1311231012103.

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, 362222 + ... + 1659417.

It is an arithmetic number, because the mean of its divisors is an integer number (245856694500).

Almost surely, 2^{1311231012122} is an apocalyptic number.

1311231012122 is a deficient number, since it is larger than the sum of its proper divisors (655622543878).

1311231012122 is a wasteful number, since it uses less digits than its factorization.

1311231012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345940.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1311231012122 its reverse (2212101321131), we get a palindrome (3523332333253).

The spelling of 1311231012122 in words is "one trillion, three hundred eleven billion, two hundred thirty-one million, twelve thousand, one hundred twenty-two".