123012130111 has 8 divisors (see below), whose sum is σ = 134974123200. Its totient is φ = 111407211552.

The previous prime is 123012130091. The next prime is 123012130127. The reversal of 123012130111 is 111031210321.

It is a happy number.

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

It is not a de Polignac number, because 123012130111 - 2¹³ = 123012121919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012130151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89267911 + ... + 89269288.

It is an arithmetic number, because the mean of its divisors is an integer number (16871765400).

Almost surely, 2^123012130111 is an apocalyptic number.

123012130111 is a deficient number, since it is larger than the sum of its proper divisors (11961993089).

123012130111 is a wasteful number, since it uses less digits than its factorization.

123012130111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178537265.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 123012130111 its reverse (111031210321), we get a palindrome (234043340432).

It can be divided in two parts, 12301 and 2130111, that added together give a palindrome (2142412).

The spelling of 123012130111 in words is "one hundred twenty-three billion, twelve million, one hundred thirty thousand, one hundred eleven".