123033011100 has 36 divisors (see below), whose sum is σ = 355975512984. Its totient is φ = 32808802880.

The previous prime is 123033011083. The next prime is 123033011147. The reversal of 123033011100 is 1110330321.

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 123033011100.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 205054719 + ... + 205055318.

It is an arithmetic number, because the mean of its divisors is an integer number (9888208694).

Almost surely, 2^123033011100 is an apocalyptic number.

123033011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123033011100 is an abundant number, since it is smaller than the sum of its proper divisors (232942501884).

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

123033011100 is a wasteful number, since it uses less digits than its factorization.

123033011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410110054 (or 410110047 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 123033011100 its reverse (1110330321), we get a palindrome (124143341421).

The spelling of 123033011100 in words is "one hundred twenty-three billion, thirty-three million, eleven thousand, one hundred".