1101312011320 has 128 divisors (see below), whose sum is σ = 2567961792000. Its totient is φ = 424809100800.

The previous prime is 1101312011281. The next prime is 1101312011323. The reversal of 1101312011320 is 231102131011.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1101312011294 and 1101312011303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101312011323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62356651 + ... + 62374309.

It is an arithmetic number, because the mean of its divisors is an integer number (20062201500).

Almost surely, 2^{1101312011320} is an apocalyptic number.

1101312011320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101312011320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1283980896000).

1101312011320 is an abundant number, since it is smaller than the sum of its proper divisors (1466649780680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1101312011320 is a wasteful number, since it uses less digits than its factorization.

1101312011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18173 (or 18169 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1101312011320 its reverse (231102131011), we get a palindrome (1332414142331).

The spelling of 1101312011320 in words is "one trillion, one hundred one billion, three hundred twelve million, eleven thousand, three hundred twenty".