1111320123120 has 120 divisors (see below), whose sum is σ = 3870412496496. Its totient is φ = 296352027648.

The previous prime is 1111320123119. The next prime is 1111320123127. The reversal of 1111320123120 is 213210231111.

1111320123120 is a `hidden beast` number, since 1 + 111 + 320 + 1 + 231 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1111320123093 and 1111320123102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111320123127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28563897 + ... + 28602776.

Almost surely, 2^{1111320123120} is an apocalyptic number.

1111320123120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111320123120 is an abundant number, since it is smaller than the sum of its proper divisors (2759092373376).

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

1111320123120 is an equidigital number, since it uses as much as digits as its factorization.

1111320123120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57166701 (or 57166683 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1111320123120 its reverse (213210231111), we get a palindrome (1324530354231).

The spelling of 1111320123120 in words is "one trillion, one hundred eleven billion, three hundred twenty million, one hundred twenty-three thousand, one hundred twenty".