210011310111123 has 24 divisors (see below), whose sum is σ = 312836136387840. Its totient is φ = 135696016375920.

The previous prime is 210011310111101. The next prime is 210011310111263. The reversal of 210011310111123 is 321111013110012.

210011310111123 is a `hidden beast` number, since 210 + 0 + 11 + 310 + 1 + 11 + 123 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-210011310111123 is a prime.

It is a super-2 number, since 2×210011310111123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210011310111096 and 210011310111105.

It is not an unprimeable number, because it can be changed into a prime (210011310118123) 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, 2785184311 + ... + 2785259712.

It is an arithmetic number, because the mean of its divisors is an integer number (13034839016160).

Almost surely, 2^{210011310111123} is an apocalyptic number.

210011310111123 is a deficient number, since it is larger than the sum of its proper divisors (102824826276717).

210011310111123 is a wasteful number, since it uses less digits than its factorization.

210011310111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5570444159 (or 5570444156 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 210011310111123 its reverse (321111013110012), we get a palindrome (531122323221135).

The spelling of 210011310111123 in words is "two hundred ten trillion, eleven billion, three hundred ten million, one hundred eleven thousand, one hundred twenty-three".