120211111123 has 4 divisors (see below), whose sum is σ = 120231903888. Its totient is φ = 120190318360.

The previous prime is 120211111117. The next prime is 120211111129. The reversal of 120211111123 is 321111112021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (120211111117) and next prime (120211111129).

It is a cyclic number.

It is not a de Polignac number, because 120211111123 - 2¹⁷ = 120210980051 is a prime.

It is a super-2 number, since 2×120211111123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120211111097 and 120211111106.

It is not an unprimeable number, because it can be changed into a prime (120211111129) 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, 10387708 + ... + 10399273.

It is an arithmetic number, because the mean of its divisors is an integer number (30057975972).

Almost surely, 2^120211111123 is an apocalyptic number.

120211111123 is a deficient number, since it is larger than the sum of its proper divisors (20792765).

120211111123 is an equidigital number, since it uses as much as digits as its factorization.

120211111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20792764.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 120211111123 its reverse (321111112021), we get a palindrome (441322223144).

The spelling of 120211111123 in words is "one hundred twenty billion, two hundred eleven million, one hundred eleven thousand, one hundred twenty-three".