123120330111 has 24 divisors (see below), whose sum is σ = 178192460160. Its totient is φ = 81917888976.

The previous prime is 123120330097. The next prime is 123120330119. The reversal of 123120330111 is 111033021321.

123120330111 is a `hidden beast` number, since 12 + 312 + 0 + 330 + 1 + 11 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-123120330111 is a prime.

It is a super-2 number, since 2×123120330111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123120330119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19705590 + ... + 19711836.

It is an arithmetic number, because the mean of its divisors is an integer number (7424685840).

Almost surely, 2^123120330111 is an apocalyptic number.

123120330111 is a deficient number, since it is larger than the sum of its proper divisors (55072130049).

123120330111 is a wasteful number, since it uses less digits than its factorization.

123120330111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10235 (or 10232 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 123120330111 its reverse (111033021321), we get a palindrome (234153351432).

The spelling of 123120330111 in words is "one hundred twenty-three billion, one hundred twenty million, three hundred thirty thousand, one hundred eleven".