16811120123 has 8 divisors (see below), whose sum is σ = 20342868192. Its totient is φ = 13561911936.

The previous prime is 16811120119. The next prime is 16811120153. The reversal of 16811120123 is 32102111861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16811120123 - 2² = 16811120119 is a prime.

It is a super-2 number, since 2×16811120123² (a number of 21 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 = 16811120092 and 16811120101.

It is not an unprimeable number, because it can be changed into a prime (16811120153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70634840 + ... + 70635077.

It is an arithmetic number, because the mean of its divisors is an integer number (2542858524).

Almost surely, 2^16811120123 is an apocalyptic number.

16811120123 is a deficient number, since it is larger than the sum of its proper divisors (3531748069).

16811120123 is a wasteful number, since it uses less digits than its factorization.

16811120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141269941.

The product of its (nonzero) digits is 576, while the sum is 26.

Adding to 16811120123 its reverse (32102111861), we get a palindrome (48913231984).

The spelling of 16811120123 in words is "sixteen billion, eight hundred eleven million, one hundred twenty thousand, one hundred twenty-three".