201012111123 has 4 divisors (see below), whose sum is σ = 268016148168. Its totient is φ = 134008074080.

The previous prime is 201012111101. The next prime is 201012111133. The reversal of 201012111123 is 321111210102.

201012111123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 201012111123 - 2⁸ = 201012110867 is a prime.

It is a super-2 number, since 2×201012111123² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201012111133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33502018518 + ... + 33502018523.

It is an arithmetic number, because the mean of its divisors is an integer number (67004037042).

Almost surely, 2^201012111123 is an apocalyptic number.

201012111123 is a deficient number, since it is larger than the sum of its proper divisors (67004037045).

201012111123 is an equidigital number, since it uses as much as digits as its factorization.

201012111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67004037044.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 201012111123 its reverse (321111210102), we get a palindrome (522123321225).

The spelling of 201012111123 in words is "two hundred one billion, twelve million, one hundred eleven thousand, one hundred twenty-three".