120010111123 has 4 divisors (see below), whose sum is σ = 137154412720. Its totient is φ = 102865809528.

The previous prime is 120010111079. The next prime is 120010111153. The reversal of 120010111123 is 321111010021.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120010111123 is a prime.

It is a super-2 number, since 2×120010111123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120010111153) 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, 8572150788 + ... + 8572150801.

It is an arithmetic number, because the mean of its divisors is an integer number (34288603180).

Almost surely, 2^120010111123 is an apocalyptic number.

120010111123 is a deficient number, since it is larger than the sum of its proper divisors (17144301597).

120010111123 is an equidigital number, since it uses as much as digits as its factorization.

120010111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17144301596.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 120010111123 its reverse (321111010021), we get a palindrome (441121121144).

The spelling of 120010111123 in words is "one hundred twenty billion, ten million, one hundred eleven thousand, one hundred twenty-three".