123330021 has 8 divisors (see below), whose sum is σ = 167938944. Its totient is φ = 80470560.

The previous prime is 123329963. The next prime is 123330023. The reversal of 123330021 is 120033321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123330021 - 2¹⁵ = 123297253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123330023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437200 + ... + 437481.

It is an arithmetic number, because the mean of its divisors is an integer number (20992368).

Almost surely, 2^123330021 is an apocalyptic number.

It is an amenable number.

123330021 is a deficient number, since it is larger than the sum of its proper divisors (44608923).

123330021 is an equidigital number, since it uses as much as digits as its factorization.

123330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874731.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 123330021 is about 11105.4050353870. The cubic root of 123330021 is about 497.7633712352.

Adding to 123330021 its reverse (120033321), we get a palindrome (243363342).

It can be divided in two parts, 1233300 and 21, that added together give a palindrome (1233321).

The spelling of 123330021 in words is "one hundred twenty-three million, three hundred thirty thousand, twenty-one".