123103121100 has 36 divisors (see below), whose sum is σ = 356178364584. Its totient is φ = 32827498880.

The previous prime is 123103121093. The next prime is 123103121123. The reversal of 123103121100 is 1121301321.

It is a happy number.

123103121100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×123103121100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 123103121100.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 205171569 + ... + 205172168.

Almost surely, 2^123103121100 is an apocalyptic number.

123103121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123103121100 is an abundant number, since it is smaller than the sum of its proper divisors (233075243484).

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

123103121100 is a wasteful number, since it uses less digits than its factorization.

123103121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410343754 (or 410343747 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 123103121100 its reverse (1121301321), we get a palindrome (124224422421).

The spelling of 123103121100 in words is "one hundred twenty-three billion, one hundred three million, one hundred twenty-one thousand, one hundred".