123113223012 has 48 divisors (see below), whose sum is σ = 313277431040. Its totient is φ = 37401481728.

The previous prime is 123113222993. The next prime is 123113223029. The reversal of 123113223012 is 210322311321.

It is a self number, because there is not a number n which added to its sum of digits gives 123113223012.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4982533 + ... + 5007180.

Almost surely, 2^123113223012 is an apocalyptic number.

123113223012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123113223012 is an abundant number, since it is smaller than the sum of its proper divisors (190164208028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123113223012 is a wasteful number, since it uses less digits than its factorization.

123113223012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9989812 (or 9989810 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123113223012 its reverse (210322311321), we get a palindrome (333435534333).

It can be divided in two parts, 12311 and 3223012, that added together give a palindrome (3235323).

The spelling of 123113223012 in words is "one hundred twenty-three billion, one hundred thirteen million, two hundred twenty-three thousand, twelve".