123333021 has 12 divisors (see below), whose sum is σ = 203597472. Its totient is φ = 70475976.

The previous prime is 123332981. The next prime is 123333031. The reversal of 123333021 is 120333321.

It is not a de Polignac number, because 123333021 - 2¹³ = 123324829 is a prime.

It is a super-2 number, since 2×123333021² = 30422068137972882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123332985 and 123333003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123333031) 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 11 ways as a sum of consecutive naturals, for example, 978771 + ... + 978896.

It is an arithmetic number, because the mean of its divisors is an integer number (16966456).

Almost surely, 2^123333021 is an apocalyptic number.

It is an amenable number.

123333021 is a deficient number, since it is larger than the sum of its proper divisors (80264451).

123333021 is a wasteful number, since it uses less digits than its factorization.

123333021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957680 (or 1957677 counting only the distinct ones).

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

The square root of 123333021 is about 11105.5401039301. The cubic root of 123333021 is about 497.7674072301.

Adding to 123333021 its reverse (120333321), we get a palindrome (243666342).

The spelling of 123333021 in words is "one hundred twenty-three million, three hundred thirty-three thousand, twenty-one".