123232021 has 16 divisors (see below), whose sum is σ = 137491200. Its totient is φ = 109512000.

The previous prime is 123231973. The next prime is 123232027. The reversal of 123232021 is 120232321.

It is a cyclic number.

It is not a de Polignac number, because 123232021 - 2⁷ = 123231893 is a prime.

It is a super-2 number, since 2×123232021² = 30372261999488882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123231986 and 123232004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123232027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94071 + ... + 95371.

It is an arithmetic number, because the mean of its divisors is an integer number (8593200).

Almost surely, 2^123232021 is an apocalyptic number.

123232021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123232021 is a deficient number, since it is larger than the sum of its proper divisors (14259179).

123232021 is a wasteful number, since it uses less digits than its factorization.

123232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 123232021 is about 11100.9918926193. The cubic root of 123232021 is about 497.6314927292.

Adding to 123232021 its reverse (120232321), we get a palindrome (243464342).

The spelling of 123232021 in words is "one hundred twenty-three million, two hundred thirty-two thousand, twenty-one".