1310120123111 has 4 divisors (see below), whose sum is σ = 1310158356672. Its totient is φ = 1310081889552.

The previous prime is 1310120123093. The next prime is 1310120123119. The reversal of 1310120123111 is 1113210210131.

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 1310120123111 - 2²⁶ = 1310053014247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1310120123111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310120123119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19065335 + ... + 19133928.

It is an arithmetic number, because the mean of its divisors is an integer number (327539589168).

Almost surely, 2^{1310120123111} is an apocalyptic number.

1310120123111 is a deficient number, since it is larger than the sum of its proper divisors (38233561).

1310120123111 is an equidigital number, since it uses as much as digits as its factorization.

1310120123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38233560.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1310120123111 its reverse (1113210210131), we get a palindrome (2423330333242).

The spelling of 1310120123111 in words is "one trillion, three hundred ten billion, one hundred twenty million, one hundred twenty-three thousand, one hundred eleven".