111012201120123 has 40 divisors (see below), whose sum is σ = 165960421078320. Its totient is φ = 73951308668160.

The previous prime is 111012201120113. The next prime is 111012201120143. The reversal of 111012201120123 is 321021102210111.

It is a happy number.

It is not a de Polignac number, because 111012201120123 - 2¹⁸ = 111012200857979 is a prime.

It is a super-3 number, since 3×111012201120123³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111012201120096 and 111012201120105.

It is not an unprimeable number, because it can be changed into a prime (111012201120113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 564329343 + ... + 564526023.

It is an arithmetic number, because the mean of its divisors is an integer number (4149010526958).

Almost surely, 2^{111012201120123} is an apocalyptic number.

111012201120123 is a deficient number, since it is larger than the sum of its proper divisors (54948219958197).

111012201120123 is a wasteful number, since it uses less digits than its factorization.

111012201120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202009 (or 202000 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 111012201120123 its reverse (321021102210111), we get a palindrome (432033303330234).

The spelling of 111012201120123 in words is "one hundred eleven trillion, twelve billion, two hundred one million, one hundred twenty thousand, one hundred twenty-three".