123012111106 has 8 divisors (see below), whose sum is σ = 185005023120. Its totient is φ = 61343770068.

The previous prime is 123012111091. The next prime is 123012111107. The reversal of 123012111106 is 601111210321.

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

It is not an unprimeable number, because it can be changed into a prime (123012111107) 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 3 ways as a sum of consecutive naturals, for example, 81141796 + ... + 81143311.

It is an arithmetic number, because the mean of its divisors is an integer number (23125627890).

Almost surely, 2^123012111106 is an apocalyptic number.

123012111106 is a deficient number, since it is larger than the sum of its proper divisors (61992912014).

123012111106 is a wasteful number, since it uses less digits than its factorization.

123012111106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162285488.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 123012111106 its reverse (601111210321), we get a palindrome (724123321427).

The spelling of 123012111106 in words is "one hundred twenty-three billion, twelve million, one hundred eleven thousand, one hundred six".