1103123121320 has 64 divisors (see below), whose sum is σ = 2825390471040. Its totient is φ = 383694995200.

The previous prime is 1103123121299. The next prime is 1103123121337. The reversal of 1103123121320 is 231213213011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1103123121292 and 1103123121301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54492011 + ... + 54512250.

It is an arithmetic number, because the mean of its divisors is an integer number (44146726110).

Almost surely, 2^{1103123121320} is an apocalyptic number.

1103123121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103123121320 is an abundant number, since it is smaller than the sum of its proper divisors (1722267349720).

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

1103123121320 is a wasteful number, since it uses less digits than its factorization.

1103123121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109004306 (or 109004302 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1103123121320 its reverse (231213213011), we get a palindrome (1334336334331).

The spelling of 1103123121320 in words is "one trillion, one hundred three billion, one hundred twenty-three million, one hundred twenty-one thousand, three hundred twenty".