123003330021 has 48 divisors (see below), whose sum is σ = 208775740992. Its totient is φ = 68798937600.

The previous prime is 123003330019. The next prime is 123003330041. The reversal of 123003330021 is 120033300321.

123003330021 is a `hidden beast` number, since 12 + 300 + 3 + 330 + 0 + 21 = 666.

It is not a de Polignac number, because 123003330021 - 2¹ = 123003330019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123003329976 and 123003330003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123003330001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11694861 + ... + 11705373.

It is an arithmetic number, because the mean of its divisors is an integer number (4349494604).

Almost surely, 2^123003330021 is an apocalyptic number.

123003330021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123003330021 is a deficient number, since it is larger than the sum of its proper divisors (85772410971).

123003330021 is a wasteful number, since it uses less digits than its factorization.

123003330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19634 (or 19631 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 123003330021 its reverse (120033300321), we get a palindrome (243036630342).

The spelling of 123003330021 in words is "one hundred twenty-three billion, three million, three hundred thirty thousand, twenty-one".